Logical ReasoningDifficulty: Easy

PT129 S1 Q16 Explanation

Among multiparty democracies

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

TopicsNecessary Assumption

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Stimulus

Among multiparty democracies, those with the fewest parties will have the most-productive legislatures. The fewer the number of parties in a democracy, the more issues each must take a stand on. A political party that must take stands on a those issues; this promotes a tendency to compromise.

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
16.

Which one of the following is an assumption required by

Answer choices

  1. Out of Scope: disagreements within parties6% picked this

    The more political parties a nation has, the more likely it is that there will

    The author is committed to thinking that more parties means each party has to take a stand on fewer issues, leading to less prioritizing and possibly less compromise. But nowhere does she discuss disagreements within parties.

  2. Out of Scope: important9% picked this

    The fewer the number of a nation's political parties, the more important it is that those parties can

    We know that the fewer parties there are, the more likely they are to compromise. But that’s different from saying “the more important it is that they compromise”. I can say “the more candy I eat, the more sugar is in my bloodstream”, and that wouldn’t commit me to thinking “the more candy I eat, the more important it is that there is sugar in my bloodstream”.

  3. Correct81% picked this

    The tendency to compromise makes the legislative process

    Why this is right

    This is also the only answer that mentions the new guy “most-productive legislatures”, so it would be possible to scan the answers and move very quickly to this one. If we negate this, and compromise has nothing to do with productivity, then the author’s evidence never managed to say anything about “more/less productive legislatures”.

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

  4. Fake Opposite Out of Scope: nondemocracies1% picked this

    The legislatures of nondemocracies are less productive than are those

    As soon as we see “nondemocracies”, we know this is out of scope. This is a Fake Opposite trap that’s common on Necessary Assumption. Since we’re hearing that some democracies are more productive, they write a trap answer that says non-democracies are less productive.

  5. Too Strong: “never” “all” “important issues”3% picked this

    Legislators in a multiparty democracy never all agree on

    This is way too strong. The author hasn’t committed herself to the idea that legislators in multiparty democracies have never all agreed on something important. If we negate this, it gives something way too weak to hurt the argument: “at least one time, in a multiparty democracy, legislators all agreed on an important issue”.

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