PrepTest 135

[lcid:3636] Prep Test 135 LSAT — Logical Reasoning — S1 Logical reasoning

Question prompt

Interior decorator: All coffeehouses 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

Facts

Valid or Flawed

NA

Question Type

Must Be True Questions

Stimulus Summary

Coffeehouse → Public place Restaurant → Public place Public place AND Well-designed --most--> Feature artwork Public place AND Uncomfortable → ~Well-designed Public place AND Comfortable → Spacious interior

Answer Anticipation

There is without a doubt too much going on here to go through and figure out all potential inferences ahead of time. Instead, it’s important to have the diagrams drawn out for each statement to make them easier to use and follow. With that, we should head to the answers ASAP so we have time to work through each one.

Answer choices

  1. A
    Any restaurant that has Remaining source text redacted.
    Why choice A is not credited
    This answer relies on a reversal of statement #5 - a comfortable public place is guaranteed to have a spacious interior, not the other way around.
  2. B
    Most public places that Remaining source text redacted.
    Why choice B is not credited
    This answer is a reversal of statement #3, and we can’t reverse most statements, so it’s incorrect.
  3. C
    Most coffeehouses that are Remaining source text redacted.
    Why choice C is not credited
    Be careful here! While most coffeehouses are public places, and most well-designed public places do feature artwork, we can’t infer that each subset of well-designed public place also features artwork. Statement #3 is about well-designed public places as a group, and it’s possible that all of certain public places that are well-designed (say, all hotels) feature artwork, and none of certain other public places that are well-designed do. In other words, this is trying to chain a conditional statement into a most statement, which is invalid.
  4. D
    Any well–designed coffeehouse or Remaining source text redacted.
    Why choice D matches the stem
    Phew, this looks like it deals with a lot of the statements in the stimulus. We know that these two locations are public places. If they’re well-designed, then there’s a chance they have artwork. However, they definitely are comfortable - the contrapositive of statement #4 guarantees that. And if they’re public places that are comfortable, then they must have spacious interiors. It required almost all of the statements from the stimulus, but this answer is justified by the Decorator’s statements, so this is our answer.
  5. E
    Any coffeehouse that has Remaining source text redacted.
    Why choice E is not credited
    This answer relies on having a spacious interior being sufficient to draw a conclusion, which it isn't - so there’s a reversal going on in this answer choice.

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