PrepTest 110

[lcid:3537] Prep Test 110 LSAT — Logical Reasoning — S2 Logical reasoning

Question prompt

Although the charter of Remaining source text redacted.
Why the credited answer is right

Credited answer: D

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

Question Type

Strengthen with Sufficient Premise Questions

Answer choices

  1. A
    All students with learning Remaining source text redacted.
    Why choice A is not credited
    Incorrect. This answer connects the ideas we need to connect for the argument's conclusion to follow logically, but not in the correct manner. We're looking for an answer saying that only students with learning disabilities have special education needs (Special education needs → Learning disabilities), not the reverse, as this answer states. The argument relies on the school not having any students with these needs based on a lack of students with learning disabilities.
  2. B
    The school currently has Remaining source text redacted.
    Why choice B is not credited
    Incorrect. This answer more or less restates a premise of the argument.
  3. C
    The school should enroll Remaining source text redacted.
    Why choice C is not credited
    Incorrect. What the school should do can't justify a determination of whether the school is in violation of its charter.
  4. D
    The only students with Remaining source text redacted.
    Why choice D matches the stem
    Correct. Argument or Facts:
    Argument

    Valid or Flawed:
    Flawed

    Question Type:
    Strengthen with Sufficient Premise

    Stimulus Summary:
    Westside School charter — The school must have some students with special educational needs
    Westside School — Has no students with learning disabilities
    Conclusion — Westside School is violating its charter

    Answer Anticipation:
    In Strengthen with Sufficient Premise questions, we should start by looking at the conclusion to see if any new concepts show up. Here, however, there aren't—it mentions a school in violation of its charter. The premises discuss that school's charter and what would count as a violation (at least, one violation), so the premises could justify the conclusion with the right information.

    The charter of Westside School requires some students with special educational needs. So to be in violation of that charter, Westside would need to lack any students with such needs. Does it establish that? It does not—instead, it establishes that there are no students with learning disabilities. It's possible that there are students at the school who don't have learning disabilities but do have special educational needs.

    In order to justify the conclusion here, then, it would need to be established that only students with learning disabilities have special educational needs.

    Note that this Strengthen with Sufficient Premise stimulus applies a rule to a specific situation. That usually happens with conditional statements, and we could have represented the rule from the charter with a conditional, though we didn't. However, the same general principles apply in this case as with a question that is more clearly conditional—when an argument attempts to apply a rule to a situation, it's generally flawed in that it fails to establish the situation meets the conditions under which the rule applies.

    Answer Explanation:
    This answer connects the ideas that need to be connected in the correct manner, thus justifying the conclusion. The Westside School has no students with learning disabilities. If they're the only students with special education needs, then the school has no such students, in violation of its charter.

    Key Takeaway:
    When a Strengthen with Sufficient Premise question raises a rule and then applies it to a specific situation, it's generally flawed in that it fails to establish that the rule applies in that situation. Here, it's a little different in that the argument fails to establish that a necessary part of the rule is followed, but the same principle applies—there's a shift in the language between the situation and the rule, and the correct answer bridges that gap.
  5. E
    The school's charter cannot Remaining source text redacted.
    Why choice E is not credited
    Incorrect. The conclusion is about whether the school "is currently" in violation of the charter not whether it could change the charter to be in compliance.

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