PrepTest 118

[lcid:3568] Prep Test 118 LSAT — Logical Reasoning — S1 Logical reasoning

Question prompt

If the play were 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 / Sufficient & Necessary Questions

Answer choices

  1. A
    fails to draw the Remaining source text redacted.
    Why choice A is not credited
    Incorrect. The argument can't reach any valid conclusion based on the play not being successful, so the stimulus doesn't have a conclusion that it can fail to draw.
  2. B
    fails to explain in Remaining source text redacted.
    Why choice B is not credited
    Incorrect. The conditional rule established just cares about success, not any specific type of success, so this answer doesn't reflect a flaw in the argument.
  3. C
    equates the play's aesthetic Remaining source text redacted.
    Why choice C is not credited
    Incorrect. There's no discussion of aesthetic worth or commercial success—just generic "success"—so this answer is out of scope.
  4. D
    presumes, without providing justification, Remaining source text redacted.
    Why choice D is not credited
    Incorrect. If the conclusion were that the play won't go through any further avenues, then this answer would be correct. However, the conclusion is just that it won't be adapted into a movie or revived, so this answer doesn't properly describe the argument.
  5. E
    fails to recognize 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:
    Play successful → Movie adaptation OR Revived at Decade Festival
    not Play successful
    Therefore: not Movie adaptation AND not Revived at Decade Festival

    Answer Anticipation:
    The argument lays out a conditional relationship, and then uses a negation of the sufficient condition to conclude a negation of the necessary condition. That's an illegal negation, so the correct answer will need to point out that conditional logic flaw.

    Answer Explanation:
    This answer highlights the illegal negation. An illegal negation is flawed because there are potentially other sufficient conditions that can be met to lead to a given necessary condition. This answer highlights that—while the play doesn't meet one criteria for revival or adaptation, there could be others (such as being a favorite of a prominent director or producer).

    Key Takeaway:
    The conditional logic flaws are often much easier to spot than they are to find in the answer choices, as the answers can be convoluted and difficult to parse. That's particularly true when there are multiple answers that discuss sufficient and necessary conditions. That wasn't the case here, but it is in other questions, so use questions like this to learn and drill what the correct answers describing these different conditional logic flaws sound like so you can differentiate between them and the wrong ones when you're given options!

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