Logical ReasoningDifficulty: Easy

PT144 S2 Q10 Explanation

The Asian elephant walks with

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

TopicsSufficient Assumption

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Stimulus

The Asian elephant walks with at least two, and sometimes three, feet on the ground at all times. Even though it can accelerate, it does so merely by taking quicker Asian elephant does not actually run.

What this question is testing

Sufficient Assumption

Argument

The author says: the Asian elephant always has at least two feet on the ground, so it doesn't actually run.

Evaluate

The argument is treating "having feet on the ground" as the disqualifier from running. For that to work, we need a definition of running that requires the opposite — having all feet off the ground at some moment.

Think of it this way. The author is implicitly using a definition: That's a real biological definition (it's how scientists distinguish running from fast walking). Add that, and the argument closes: elephant always has feet down -> elephant is never airborne -> elephant doesn't run.

Goal

The answer should give us this definition of running.

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The question
10.

The conclusion drawn above follows logically if which one of the following

Answer choices

  1. Bad Description4% picked this

    If an animal cannot accelerate, then it

    This connects acceleration ability to running, but the argument doesn't need that. The argument grants the elephant can accelerate (it just does so by taking quicker steps). The conclusion about not running comes from the feet-on-ground premise, not from inability to accelerate.

  2. Correct90% picked this

    To run, an animal must have all of its feet off the

    Why this is right

    This is the bridge. To run, an animal must have all of its feet off the ground at once. The premise tells us the Asian elephant always has at least two feet on the ground — meaning it never has all feet off at once. By this definition, the elephant doesn't run. Conclusion guaranteed.

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

  3. Out of Scope3% picked this

    The Asian elephant can walk as quickly as some

    This compares walking speeds across species. The argument is about whether the elephant's movement counts as running, not about how fast it walks compared to other animals' running. This doesn't bridge to the conclusion.

  4. Out of Scope1% picked this

    It is unusual for a four-legged animal to keep three feet on the

    What's "unusual" for four-legged animals doesn't define running. The argument needs a rule about what running is, not about what walking pattern is statistically common.

  5. Too Strong3% picked this

    All four-legged animals walk with at least two feet on the ground

    This generalizes the elephant's walking habit to all four-legged animals. The argument doesn't need that. It only needs a definition of running that the Asian elephant fails to meet. Even if other animals run differently, that doesn't establish that this elephant doesn't run.

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