Logical reasoning PrepTest 156 · Section 2 · Question 11

Question prompt

Professor Williams: Professor Thomas's 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.

Argument or Facts

Argument

Valid or Flawed

Flawed

Strategy Overview

Argument or facts? Always argument, so identify premises and conclusions of argument Anticipate why the premises are not enough to prove that the conclusion is true.
Checking to see if a common logical fallacy is committed is very helpful.

Answer Anticipation

On an Errors in Reasoning question, we should take the time to articulate why the premise or premises aren't enough to prove that the conclusion is true. To that end, we can examine whether the conclusion makes any bold claims or whether the argument relies on any reasoning techniques associated with common flaws. Professor Williams gets personal, so this argument commits an ad hominem flaw, a disputation flaw that pops up occasionally in Logical Reasoning. Williams doesn't address what Thomas actually says about York. Instead, Williams just takes a potshot about how Thomas sounds "so much like [a] self-serving academic." OK, but a self-serving academic may make a decent point occasionally. If we're going to undermine their argument, we should address what they actually say. We probably shouldn't accuse them of throwing a tantrum and lashing out at others, even if they sound a little annoying. So, this answer choice will likely say that Williams is making a personal attack against Thomas rather than addressing Thomas's argument.

Answer choices

  1. A
    confuses the distinction between Remaining source text redacted.
    Why choice A is not credited

    This doesn't match the flaw we anticipated, so we can table or eliminate it without giving it much thought. Besides, Williams's argument would be better if it addressed the distinction between being confrontational and engaging students. At least then, Williams would be responding to what Thomas actually said.

  2. B
    presupposes the point it Remaining source text redacted.
    Why choice B is not credited

    This doesn't describe the flaw we identified, so we can table or eliminate it without giving it much thought. Besides, this answer choice refers to "circular reasoning." Circular reasoning occurs when the conclusion merely restates a premise. Arguments that rely on circular reasoning typically have this pattern on the LSAT: "X is true. We know this because, even when X doesn't appear to be true, X still must be true because X is always true." The Wiliams doesn't presuppose that Thomas is venting against people like York — Williams bases that conclusion on the opinion that Thomas sounds like a self-serving academic.

  3. C
    mistakes Professor Thomas's characterization Remaining source text redacted.
    Why choice C is not credited

    This isn't the flaw we anticipated, so we can table or eliminate it without giving it much thought. Besides, this answer choice doesn't make much sense. Williams says that Thomas characterizes York as being too flamboyant and confrontational. If Thomas said it, Thomas must believe it. Regardless, this conclusion is about Thomas's self-loathing and temper tantrums, so it doesn't matter whether Thomas actually endorses the argument York is too flamboyant and confrontational.

  4. D
    attacks Professor Thomas personally Remaining source text redacted.
    Why choice D matches the stem

    This matches the flaw we anticipated, so we can select this and give the remaining answer choices a quick glance. This describes exactly what Williams did — attack Thomas personally rather than address what Thomas actually said about York or how York actually behaves in the classroom. Even if Thomas sounds like a self-serving academic, Thomas might make a decent point about York. Williams needs to refute that point before attributing ulterior motives to Thomas.

  5. E
    rejects the possibility that Remaining source text redacted.
    Why choice E is not credited

    This doesn't match the flaw we anticipated, so we can table or eliminate it without giving it much thought. Besides, Williams's argument would be better if Williams proved that York is not too confrontational. In that case, Williams would address the merits of Thomas's argument. We'd at least be more willing to accept the possibility Thomas was lashing out if we knew Thomas was tossing out untrue accusations.

Question analytics

Based on historical answer selection rates for this question.

Answer choice distribution

  1. A 7%
  2. B 6%
  3. C 4%
  4. D Credited 79%
  5. E 5%

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