LSAT 125 – Section 4 – Question 14

LSAT 125 - Section 4 - Question 14

June 2008

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Question
QuickView		 Type Tags Answer
Choices		 Curve Question
Difficulty		 Psg/Game/S
Difficulty		 Explanation
PT125 S4 Q14
+LR
Flaw or descriptive weakening +Flaw
Conditional Reasoning +CondR
A
1%
151
B
5%
155
C
6%
157
D
82%
164
E
5%
155
139
148
157
 +Medium 145.982 +SubsectionMedium

Expert: A group of researchers claims to have shown that for an antenna to work equally well at all frequencies, it must be symmetrical in shape and have what is known as a fractal structure. Yet the new antenna developed by these researchers, which satisfies both of these criteria, in fact works better at frequencies below 250 megahertz than at frequencies above 250 megahertz. Hence, their claim is incorrect.

A
fails to provide a definition of the technical term “fractal”
The argument doesn’t need to define “fractal.” The word simply takes on its ordinary dictionary definition.
B
contradicts itself by denying in its conclusion the claim of scientific authorities that it relies on in its premises
The author doesn’t rely on the claims of authorities. The author identifies an antenna made by researchers, but the premise isn’t based on what researchers claim.
C
concludes that a claim is false merely on the grounds that there is insufficient evidence that it is true
The premise does not assert that there’s not enough evidence to show the researchers are correct. The premise points out an antenna that is supposed to be a counterexample to the researchers’ claim.
D
interprets an assertion that certain conditions are necessary as asserting that those conditions are sufficient
The researchers asserted that symmetry and fractal nature were necessary for an antenna to work equally well at all frequencies. But the author interpreted this as a claim those conditions were sufficient for working equally well.
E
takes for granted that there are only two possible alternatives, either below or above 250 megahertz
The author does not exclude the possibility of antennas working at exactly 250 megahertz. The evidence happens to involve an antenna that works better at below 250 than above, but that doesn’t imply the author think exactly 250 is impossible.

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LSAT PrepTest 125 Explanations

Section 1 - Reading Comprehension

Section 2 - Logical Reasoning

Section 3 - Reading Comprehension

Section 4 - Logical Reasoning

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