Editorialist: In a large corporation, one of the functions of the corporation’s president is to promote the key interests of the shareholders. Therefore, the president has a duty to keep the corporation’s profits high.

Summarize Argument
The editorialist concludes that the president of a corporation has a duty to keep profits high because their role involves promoting the shareholders’ key interests.

Notable Assumptions
The editorialist assumes that high profits are a key interest of shareholders and that by keeping profits high, the president of a corporation is at least partially promoting shareholders’ key interests.

A
Shareholders sometimes will be satisfied even if dividends paid to them from company profits are not high.
This doesn’t help to establish that high profits are a key interest of shareholders. The editorialist doesn’t mention whether the dividends paid to shareholders should be high or not.
B
The president and the board of directors of a corporation are jointly responsible for advancing the key interests of the shareholders.
Even if the president shares this responsibility with the board, it doesn’t change the fact that the president promotes shareholders’ interests. And (B) doesn’t help to establish that high profits are one of those interests.
C
Keeping a corporation’s profits high is likely to advance the important interests of the corporation’s shareholders.
This suggests that high profits are a key interest of shareholders. If keeping profits high is likely to promote shareholders’ key interests and the president’s role involves promoting their interests, this suggests that the president does have a duty to keep profits high.
D
In considering where to invest, most potential shareholders are interested in more than just the profitability of a corporation.
Even if shareholders are interested in more than just profit, we still need to know whether high profits are among their key interests.
E
The president of a corporation has many functions besides advancing the important interests of the corporation’s shareholders.
It doesn't matter how many other functions the president has. Since one function is to promote shareholders' interests, we still need to determine if high profit is one of those interests.

3 comments

Everyone in Biba’s neighborhood is permitted to swim at Barton Pool at some time during each day that it is open. No children under the age of 6 are permitted to swim at Barton Pool between noon and 5 P.M. From 5 P.M. until closing, Barton Pool is reserved for adults only.

Summary
Everyone in Biba’s neighborhood is permitted to swim at Barton Pool at some time during the pool’s open hours.
No children under the age of 6 are allowed to swim at Barton Pool between noon and 5pm.
Between 5pm and close, only adults are permitted to swim at Barton Pool.

Notable Valid Inferences
Children under 6 are not allowed to swim at Barton Pool between noon and the pool’s closing time.
If there are children under 6 in Biba’s neighborhood, they are allowed to swim at Barton Pool at some time during the pools open hours.
If there are children under 6 in Biba’s neighborhood, they are allowed to swim at Barton Pool sometime before noon.

A
Few children under the age of 6 live in Biba’s neighborhood.
Could be false. The stimulus doesn’t give us any information about the age breakdown in Biba’s neighborhood.
B
If Biba’s next-door neighbor has a child under the age of 6, then Barton Pool is open before noon.
Must be true. Everyone in Biba’s neighborhood is permitted to swim in the pool at some time during its open hours, and children under 6 are not permitted to swim from noon until close. So if someone under 6 lives in the neighborhood, the pool must be open for them before noon!
C
If most children who swim in Barton Pool swim in the afternoon, then the pool is generally less crowded after 5 P.M.
Could be false. Maybe a small number of children swim in Barton Pool and a huge number of adults do, and all the adults swim after 5 P.M.!
D
On days when Barton Pool is open, at least some children swim there in the afternoon.
Could be false. The stimulus only gives us information about when different age groups are permitted to swim in the pool. It does not tell us anything about who actually swims in the pool, or when they choose to do so.
E
Any child swimming in Barton Pool before 5 P.M. must be breaking Barton Pool rules.
Could be false. If there are children in the neighborhood who are between 6 years old and adulthood, they’re permitted to swim in the pool between noon and 5!

32 comments

Human settlement of previously uninhabited areas tends to endanger species of wildlife. However, the Mississippi kite, a bird found on the prairies of North America, flourishes in areas that people have settled. In fact, during the five years since 1985 its population has risen far more rapidly in towns than in rural areas.

"Surprising" Phenomenon
Why does the Mississippi kite thrive in areas settled by humans, whereas other wildlife tends to struggle in such areas?

Objective
A hypothesis explaining this pattern must state a difference between the Mississippi kite and other wildlife that includes a distinction between towns and rural areas. This difference will result in kites’ numbers rising more quickly in towns than in rural areas.

A
Residents of prairie towns have been setting off loud firecrackers near kites’ roosting spots because of the birds’ habit of diving at people and frightening them.
This deepens the mystery. If kites are frequently disturbed in towns, then the fact the kites flourish there is even more unexpected.
B
Towns on the prairies tend to be small, with a low density of human population and large numbers of wild birds and animals.
This does not explain why the kites succeed more often in towns than in rural areas. It is not implied that relatively large numbers of wild birds and animals would cause the kites to thrive.
C
Since the international migratory bird protection treaty of 1972, it has been illegal to shoot kites, and the treaty has been effectively enforced.
This states no difference between towns and rural areas that would explain the discrepancy. If the treaty has been enforced everywhere, then kite populations in neither area should be at risk from shooting.
D
Wildlife such as pigeons and raccoons had already adapted successfully to towns and cities long before there were towns on the North American prairies.
This refers to species other than the Mississippi kite. It rules out the possibility that it is impossible for a wild species to adapt to cities and towns, but does not explain why the kites thrive in those places.
E
Trees are denser in towns than elsewhere on the prairie, and these denser trees provide greater protection from hail and windstorms for kites’ nests and eggs.
This explains why the Mississippi kites flourish in towns. Tree cover there is more dense, providing the kites with good habitat.

12 comments

When a major record label signs a contract with a band, the label assumes considerable financial risk. It pays for videos, album art, management, and promotions. Hence, the band does not need to assume nearly as much risk as it would if it produced its own records independently. For this reason, it is only fair for a major label to take a large portion of the profits from the record sales of any band signed with it.

Summarize Argument
It is fair for record labels to take a large portion of the profits from bands that signed with them because the band does not assume nearly as much risk as the label. When a label signs a band, they pay for a variety of highly expensive things and take on a high financial risk.

Identify Argument Part
This is an intermediate conclusion supported by the first sentence, which then supports the main conclusion that it is fair for labels to take large portions of the profits from bands they have signed.

A
It is the only conclusion that the argument attempts to establish.
This is not the only conclusion of the argument. It is an intermediate conclusion that supports the main conclusion that it is fair for labels to take a large cut of the profits from signed bands.
B
It is one of two unrelated conclusions, each of which the same premises are used to support.
The two conclusions are related and are supported differently. This conclusion is supported by the first sentence. The main conclusion is then supported by this sub-conclusion.
C
It is a general principle from which the argument’s conclusion follows as a specific instance.
This is not a general principle. It is a sub-conclusion that is supported by the fact that labels take on a considerable amount of risk when signing a band.
D
It describes a phenomenon for which the rest of the argument offers an explanation.
This is not a phenomenon that the rest of the argument seeks to explain. It is part of the reasoning that leads to author uses to justify their conclusion.
E
Premises are used to support it, and it is used to support the main conclusion.
The author supports the idea that a band signed with a major label does not need to assume as much risk. This sub-conclusion is then used to support the main conclusion that it is fair for the label to take a large portion of the profits.

3 comments

Commentator: Recently, articles criticizing the environmental movement have been appearing regularly in newspapers. According to Winslow, this is due not so much to an antienvironmental bias among the media as to a preference on the part of newspaper editors for articles that seem “daring” in that they seem to challenge prevailing political positions. It is true that editors like to run antienvironmental pieces mainly because they seem to challenge the political orthodoxy. But serious environmentalism is by no means politically orthodox, and antienvironmentalists can hardly claim to be dissidents, however much they may have succeeded in selling themselves as renegades.

Summary

Winslow believes that articles criticizing the environmental movement have been appearing in newspapers due to the desire of newspaper editors for articles that seem to challenge prevailing political positions. The commentator concedes that editors like to run antienvironmental pieces primarily because they like to challenge prevailing positions. But the commentator asserts that, despite what news editors might think, environmentalism isn’t actually the prevailing position.

Strongly Supported Conclusions

Newspaper editors are selecting some stories on the basis of an inaccurate understanding of what is a prevailing position.

At least some people have an inaccurate understanding about the prevalence of serious environmentalism.

A
Winslow is correct about the preference of newspaper editors for controversial articles.

Strongly supported. The commentator acknowledges that editors like to run antienvironmental pieces because they like to challenge what they perceive to be prevailing positions. This preference can be characterized as a preference for “controversial” pieces.

B
Critics of environmentalism have not successfully promoted themselves as renegades.

Unsupported. The commentator asserts that antienvironmentalists are not actually dissidents, “however much they may have succeeded” in selling themselves as renegades. This acknowledges the critics may have succeeded in portraying themselves as renegades.

C
Winslow’s explanation is not consonant with the frequency with which critiques of environmentalism are published.

Unsupported. The commentator supports Winslow’s explanation about why newspaper editors have regularly published antienvironmentalist pieces. So, the stimulus doesn’t support a claim that the explanation is inconsistent with anything.

D
The position attacked by critics of environmentalism is actually the prevailing political position.

Antisupported. The commentator says that serious environmentalism is not the prevailing position. So, the position attacked by critics of environmentalism is not the prevailing position.

E
Serious environmentalism will eventually become a prevailing political position.

Unsupported. The commentator doesn’t say anything about the future of serious environmentalism.


23 comments

Expert: What criteria distinguish addictive substances from nonaddictive ones? Some have suggested that any substance that at least some habitual users can cease to use is nonaddictive. However, if this is taken to be the sole criterion of nonaddictiveness, some substances that most medical experts classify as prime examples of addictive substances would be properly deemed nonaddictive. Any adequate set of criteria for determining a substance’s addictiveness must embody the view, held by these medical experts, that a substance is addictive only if withdrawal from its habitual use causes most users extreme psychological and physiological difficulty.

Summary

Some people say that any substance that at least some habitual users can stop using is nonaddictive. But this is wrong.

In order to be addictive, it must be the case that withdrawal from habitual use causes most users extreme psychological and physiological difficulty.

Very Strongly Supported Conclusions

Just because some habitual users can stop using a substance does not imply that substance is not addictive.

If it’s not the case that most users of a substance experience extreme psychological and physiological difficulty after stopping the habitual use of the substance, then the substance is not addictive.

A
If a person experiences extreme psychological and physiological difficulty in ceasing to use a substance habitually, that substance is addictive.

The stimulus never tells us what is sufficient to imply something is addictive. The criteria set forth by the author tells us what is REQUIRED (”only if”) to be addictive. But meeting the requirement described does not, by itself, establish that a substance is addictive.

B
Fewer substances would be deemed addictive than are deemed so at present if an adequate definition of “addictive” were employed.

The stimulus does not compare the number of substances deemed addictive now to the number that would be deemed addictive under a different definition. We don’t know whether the current definition is more or less restrictive than the one proposed by the author.

C
A substance that some habitual users can cease to use with little or no psychological or physiological difficulty is addictive only if that is not true for most habitual users.

Must be true based on the last sentence. In order to be addictive, then for most habitual users, when they stop using the substance, they should experience extreme psych. & phys. difficulty. So even if some habitual users can stop without that difficulty, in order to be addictive, we still need most users to experience that difficulty when stopping use of the substance.

D
A chemical substance habitually used by a person throughout life without significant psychological or physiological difficulty is nonaddictive.

Not supported, because we don’t know whether most habitual users who stop using the substance described in (D) don’t experience extreme psych. + phys. difficulty. (D) says nothing about whether stopping use causes difficulty.

E
“Addiction” is a term that is impossible to define with precision.

Not supported. The author tells us at least one thing that is required for addictiveness. We have no reason to think the author believes we can’t come up with a precise definition.


27 comments

Publisher: The new year is approaching, and with it the seasonal demand for books on exercise and fitness. We must do whatever it takes to ship books in that category on time; our competitors have demonstrated a high level of organization, and we cannot afford to be outsold.

Summarize Argument
The publisher contends that his company must ensure timely shipping for exercise and fitness books as the new year approaches. He notes that his competitors are well-organized, and his company risks being outsold if it doesn’t match the competitors’ efficiency.

Identify Conclusion
The conclusion is the publisher’s directive that the company “must do whatever it takes” to ship exercise and fitness books on time.

A
The company should make shipping books its highest priority.
The publisher argues that shipping exercise and fitness books on time is crucial but not that it’s the "highest priority." The company can have higher priorities so long as it timely ships the books. Moreover, the conclusion only discusses shipping specific books, not all books.
B
By increasing its efficiency, the company can maintain its competitive edge.
The publisher doesn't make this argument. He concludes that shipping exercise and fitness books "on time" is crucial but doesn’t specify how to achieve it. The company might already be efficient, and the publisher could be reinforcing the need to maintain that efficiency.
C
The company will be outsold if it does not maintain its competitors’ high level of organization.
The publisher does not make this argument. The publisher concludes the company "cannot afford to be outsold," but doesn't claim the company will be if it doesn’t match its competitors' organization. The company may not need the same level of organization to ship books on time.
D
It is imperative that the company ship fitness and exercise books on time.
This is a good summary of the argument’s main conclusion. The publisher concludes that it is necessary, or “imperative,” that the company ship its fitness and exercise books on time because it cannot afford to be outsold by its competitors.
E
The company should do whatever is required in order to adopt its competitors’ shipping practices.
The publisher does not make this argument. The publisher concludes the company must ship exercise and fitness books on time, not that it must follow its competitors' shipping practices. The company may already have better shipping practices that ensure timely shipping.

2 comments

Advertiser: There’s nothing wrong with a tool that has ten functions until you need a tool that can perform an eleventh function! The VersaTool can perform more functions than any other tool. If you use the VersaTool, therefore, you will need additional tools less often than you would using any other multiple-function tool.

Summarize Argument
The advertiser concludes that a user of the VersaTool will need extra tools less often than a user of another multiple-function tool. Why? Because the VersaTool has more functions than any other tool!

Identify and Describe Flaw
The advertiser’s conclusion is exclusively based on how many functions the VersaTool has, not what those functions actually are. This leaves open the possibility that the VersaTool might not have a higher number of commonly needed functions compared to other tools. So, VersaTool users might not need to use other tools less often, if the VersaTool has many rare functions but few common functions.

A
include some functions that are infrequently or never needed
This isn’t relevant to how the VersaTool’s utility compares with other tools. Whether or not the VersaTool has “some” rare functions is still irrelevant to how frequently VersaTool users will need other tools.
B
include a number of functions that are difficult to perform with any tool
Whether the functions are easy or difficult to perform doesn’t have any impact on whether a VersaTool user will need to use additional tools less often than a user of another tool.
C
cost more than the combined cost of two other multiple-function tools that together perform more functions than the VersaTool
The advertiser only makes a claim about the functionality of the VersaTool compared to other tools, not its cost-effectiveness, so this criticism doesn’t affect the argument.
D
be able to perform fewer often-needed functions than some other multiple-function tool
If the VersaTool is able to perform fewer often-needed functions compared to another multi-tool, then the user of the VersaTool will likely need additional tools more often than the user of that other tool, countering the advertiser’s conclusion.
E
not be able to perform individual functions as well as single-function tools
The advertiser isn’t arguing about how well the VersaTool performs its functions compared to other tools. The argument only compares the need for additional tools between users of the VersaTool and users of other multiple-function tools.

13 comments