Logical Reasoning

PT2 · S2 · Q18 Learning how to build a nest

A free, expert breakdown of this official LSAT Logical Reasoning question.

  • Save & drill this skill build targeted practice sets from questions like this one

  • Video walkthroughs watch every question solved step by step

  • 81 official LSATs as questions, timed sections & full-length tests

Learning how to build a nest plays an important part in the breeding success of birds.

Your task

Find the choice that makes the argument's conclusion less likely to be true.

Common trap

Answers that look negative but attack a claim the argument never relied on.

Winning move

Find the assumption the argument depends on, then pick the choice that undermines it.

18.

Which one of the following, if true, would most weaken the argument?

  1. Blackbirds build better nests than

    Trap

    5% picked this

  2. Correct

    The capacity of blackbirds to

    Why this is right

    Answer B is correct.

    Skill tested: Weaken · how this choice captures the argument's function is the move to repeat next time.

    70% picked this

  3. The breeding success of birds

    Trap

    8% picked this

  4. Smaller and weaker blackbirds breed

    Trap

    12% picked this

  5. Up to 25 percent of

    Trap

    6% picked this

Continue the review in LSAT Lab

Save this question, watch the video walkthrough, and drill similar questions in your LSAT Lab account.

LSAT Lab

Turn this review into a targeted study plan.

Save this question, drill more like it, watch the video walkthrough, and track your progress in your LSAT Lab account.

Start practicing free