The stimulus can be diagrammed as follows:

Some examples of valid logical inferences from the stimulus are: there are no new themes which are not built on existing themes, and if one lacks the ability to modify a theme, they lack creativity.
A
A lack of ability to manufacture a variation on a previous theme connotes a lack of creativity.
B
No scientific idea is entirely independent of all other ideas.
C
Careful analysis of a specific variation can reveal previous themes of which it is a variation.
D
All great scientific discoverers have been able to manufacture a variation on a theme.
E
Some new scientific discoveries do not represent, on a deep level, a variation on previous themes.
Q: But any regulations that can potentially prevent money from being wasted are useful. If obeyed, the new safety regulations will prevent some accidents, and whenever there is an accident here at the laboratory, money is wasted even if no one is injured.
A
extending the basis for assessing the utility of complying with the new regulations
B
citing additional evidence that undermines P’s assessment of the extent to which the new regulations would have prevented injuries in last year’s laboratory fire
C
giving examples to show that the uselessness of all regulations cannot validly be inferred from the uselessness of one particular set of regulations
D
showing that P’s argument depends on the false assumption that compliance with any regulations that would have prevented last year’s fire would be useful
E
pointing out a crucial distinction, overlooked by P, between potential benefits and actual benefits
Understand architecture of PC → computer scientist (”only” introduces necessary condition)
Premise 2:
Appreciate tech advances → understand architecture of PC (”only” introduces necessary condition)
Conclusion:
Computer scientist → Appreciate tech advances (”only” introduces necessary condition)
(The conclusion would have been valid if it had said “only computer scientists appreciate the tech advances.”)
A
The argument contains no stated or implied relationship between computer scientists and those who appreciate the advances in technology in the last decade.
B
The argument ignores the fact that some computer scientists may not appreciate the advances in technology made in the last decade.
C
The argument ignores the fact that computer scientists may appreciate other things besides the advances in technology made in the last decade.
D
The premises of the argument are stated in such a way that they exclude the possibility of drawing any logical conclusion.
E
The premises of the argument presuppose that everyone understands the architecture of personal computers.
Anna: That plan would fail. Cacao, like cloudberries, was once harvested from wild plants. When chocolate became popular in Europe, the cacao gatherers could not supply enough to meet the increased demand, and farmers began to grow large quantities of it at low cost. Now all cacao used in commercial chocolate production is grown on farms. Likewise, if the demand for cloudberries increases, domesticated berries grown on farms will completely supplant berries gathered in the wild.
A
giving a reason why a proposed course of action would be beneficial to all those affected by it
B
reinterpreting evidence presented in support of a proposal as a reason to reject the proposal
C
projecting the result of following a proposal in a given situation by comparing that situation with a past situation
D
proposing a general theory as a way of explaining a specific market situation
E
contending that the uses for one product are similar to the uses for another product