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Test Prep LSAT Test Exam
Law School Admission Test: Logical Reasoning, Reading Comprehension, Analytical Reasoning (Page 9 )

Updated On: 19-Jan-2026
Page 9 of 188
PDF with 934 Questions

Nutritionist: Recent studies show that the height of the average American has increased 2 inches in the past 10 years, lending support to the view that modern foods stimulate growth.

This argument would be weakened most by pointing out that

  1. statistics don't lie
  2. there are too many variables in this type of study
  3. the generic background of the subjects was not investigated
  4. the sample group used was small
  5. some people's height decreased

Answer(s): B

Explanation:

Pointing out that "there are too many variables in this type of study" weakens the argument tremendously, because isolating the reason for the growth increase now becomes very difficult. Thus, we could not deduce that modern foods stimulate growth.
Option [the sample group used was small] is close, as it also weakens the argument, but it isn't specific enough. If [the sample group used was small] were "too small," then it would be an excellent answer.



Landlord: When are you going to pay last month's rent?
Renter: First, I've already paid it. Secondly, I don't owe you anything. Third, not until you fix the heater.

The weakness in the renter's response is best expressed by which one of the following?

  1. He contradicts himself.
  2. He dislikes the landlord.
  3. He assumes the landlord has a poor memory.
  4. He repeats himself.
  5. He makes no sense.

Answer(s): A

Explanation:

The renter's third statement contradicts his second statement.



All teachers like some of their students. No teacher likes all of his or her students. If the statements are true, then all of the following must be true EXCEPT

  1. some teachers like some of their students
  2. all teachers dislike some of their students
  3. no teacher dislikes all of his or her students
  4. most teachers like most of their students
  5. no teacher likes all of his or her students

Answer(s): D

Explanation:

The passage makes no comments on the majority of a teacher's students.



You do not succeed unless you take a gamble. Gambling is foolish. Therefore, only fools succeed.
Which one of the following would weaken the conclusion the most?

  1. Most fools gamble.
  2. Most fools do not succeed.
  3. Some succeed without gambling.
  4. Most successful gamblers are not foolish.
  5. A fool and his money are soon parted.

Answer(s): C



The politicians cannot be telling the truth about a reduction in taxes. This year my taxes must have been higher than ever, because I was able to save less money than last year or the year before. All of the following point to an error in reasoning in this passage EXCEPT

  1. taxes are not the year's only expense.
  2. this year's earnings may have been smaller than last year's.
  3. politicians are frequently guilty of exaggeration or equivocation.
  4. this year's tax deductions may have been smaller than last year's
  5. income from invested income may have declined this year due to lower interest rates.

Answer(s): C

Explanation:

The speaker of this passage may have saved less money because his income was less [this year's earnings may have been...]. or [income from invested income may have...]., his tax deductions were smaller [this year's tax deductions may have been...]., or his expenses besides taxes were larger.



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