Logical ReasoningDifficulty: Medium

PT2 S4 Q9 Explanation

Advertisement: Clark brand-name parts

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

TopicsNecessary Assumption

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Stimulus

Advertisement: Clark brand-name parts are made for cars manufactured in this country. They satisfy all of our government automotive tests—the toughest such tests in the world. With foreign-made parts, you never know which might be reliable and which are cheap look-alikes that are poorly constructed and liable to cost and insist on brand-name parts by Clark for your car.

What this question is testing

Necessary Assumption

Your task

Find the assumption the argument requires in order for its conclusion to hold.

Common trap

Answers that would help the argument but aren't strictly required (sufficient, not necessary).

Winning move

Negate each choice — the right one breaks the argument when negated.

Reading along? Open the full official question in LawHub — we show a fragment here and keep the reasoning in our own words.

The question
9.

The argument requires the assumption

Answer choices

  1. Trap2% picked this

    Clark parts are available only in

  2. Trap5% picked this

    Foreign-made parts are not suitable for cars manufactured in

  3. Trap13% picked this

    No foreign-made parts satisfy our government

  4. Correct71% picked this

    Parts that satisfy our government standards are not as poorly constructed as

    Why this is right

    Answer D is correct.

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

  5. Trap10% picked this

    If parts are made for cars manufactured in our country, they are

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