PrepTest 131

[lcid:3620] Prep Test 131 LSAT — Logical Reasoning — S1 Logical reasoning

Question prompt

Columnist: A recent research Remaining source text redacted.
Why the credited answer is right

Credited answer: E

The notes below walk through why it fits the stem and how to eliminate the rest.

Question Type

Errors in Reasoning Questions

Answer choices

  1. A
    fails to consider the Remaining source text redacted.
    Why choice A is not credited
    Incorrect. Neither discusses non-exercise means of lowering cardio-respiratory illness risk, and the conclusion doesn't discuss it or imply that there aren't other ways of lowering that risk, so this answer is out of scope.
  2. B
    fails to consider that Remaining source text redacted.
    Why choice B is not credited
    Incorrect. The conclusion (and thus argument) are about lowering risk of cardio-respiratory illness (the conclusion brings these in by saying "the same benefits"). If the argument concluded that vigorous exercise was better than non strenuous exercise, then downsides such as this might be relevant, but as is, it's out of scope.
  3. C
    overlooks the possibility that Remaining source text redacted.
    Why choice C is not credited
    Incorrect. First, benefits other than lowering the risk of cardio-respiratory illness are out of scope of this argument since the conclusion is just about those benefits. Second, even if other benefits were in scope, this answer aligns with an argument that prioritizes a study showing the benefits of vigorous exercise.
  4. D
    fails to consider the Remaining source text redacted.
    Why choice D is not credited
    Incorrect. The perception people have of their own health is out of scope of an argument about the actual benefits to health of certain types of exercise. Additionally, this answer is about health generally, whereas the stimulus is about one specific aspect of it.
  5. E
    fails to show that Remaining source text redacted.
    Why choice E matches the stem
    Correct. Argument or Facts:
    Argument

    Valid or Flawed:
    Flawed

    Question Type:
    Errors in Reasoning

    Stimulus Summary:
    A new study shows that only vigorous exercise has health benefits, so an old study showing that walking also has benefits is wrong.

    Answer Anticipation:
    This argument uses the results of a new study to throw out the results of an old study. However, it provides no reason to believe that the new study is right and the old study is wrong. Since there are conflicting expert opinions/study results here, there needs to be more work done to establish that one is right and the other is wrong.

    Let's find an answer that says the argument sides with one study over another without providing any reason for doing so.

    Answer Explanation:
    This answer highlights that the Columnist decides that one of two conflicting studies is correct without establishing a reason to believe that.

    Key Takeaway:
    When two experts, studies, or observations yield contradictory conclusions, there has to be independent reasons given for believing one over the other. Just picking one as correct is flawed reasoning.

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