Logical ReasoningDifficulty: Hard

PT118 S4 Q22 Explanation

The only preexisting recordings that

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

TopicsSufficient Assumption

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Stimulus

The only preexisting recordings that are transferred onto compact disc are those that record companies believe will sell well enough on compact disc to be profitable. So, most classic jazz recordings will not be transferred jazz recordings are played on the radio.

What this question is testing

Sufficient Assumption

Your task

Find the assumption that, if added, guarantees the conclusion follows.

Common trap

Answers that only partly bridge the gap, leaving the conclusion unproven.

Winning move

Identify the new term in the conclusion and pick the choice that links it to the evidence.

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

The question
22.

The conclusion above follows logically if which one of the following

Answer choices

  1. Unrelated to Goal Reversed "Most" Statement6% picked this

    Few of the preexisting recordings that record companies believe can be profitably transferred to compact disc

    This definitely isn't connecting "not played on radio" to "not believed to be profitable". It feels somewhat tempting because what we would love to hear in order to prove the argument is that "Most classic jazz recordings are recordings that record companies don't believe would be profitable if transferred." This answer says, "Most of the recordings that record companies believe would be profitable if transferred are not classic jazz". If we're looking to hear that "most men don't know how to braid hair", it's not the same to be told that "most people who do know how to braid hair are not men". Maybe 90% of women and 70% of men know how to braid hair. Even though it's true to say "most of those who know how to braid are not men", that does not mean the same thing as "most men do not know how to braid" (70% of them do!)

  2. Unrelated to Goal2% picked this

    Few compact discs featuring classic jazz recordings are played on

    This definitely isn't connecting "not played on radio" to "not believed to be profitable". It only has the "not played on radio" part, because it would look like this: Most CDs of classic jazz are not played on the radio. We can't prove our conclusion until we establish that "most classic jazz recordings are not believed by record companies to be profitable if transferred".

  3. Negated Logic30% picked this

    The only recordings that are played on the radio are ones that record companies believe can be profitably

    We are looking for not played on radio ? record companies don't believe profitable This is saying (the only = put it on LEFT) played on radio ? RC's do believe profitable This illegal negation (illegal "light switch") does not count as the idea we're looking for. We have A ? B and C ? D and we're trying to create A ------------------> D This answer, instead of giving us B ? C is giving us ~B ? ~C

  4. Out of Scope: less interested1% picked this

    Most record companies are less interested in preserving classic jazz recordings than in

    Correct answers on Sufficient Assumption will almost never introduce new language or concepts, such as "more interested / less interested". We need to get from knowing "most classic jazz recordings aren't played on the radio" to establishing that "most classic jazz recordings aren't seen as likely to be profitable if transferred", so that we can derive the conclusion.

  5. Correct61% picked this

    No recording that is not played on the radio is one that record companies believe would be profitable

    Why this is right

    How friendly, with the double negative! In general, when we convert "No A's are B" to "All A's are ~B" we end up with A ? ~B. So if we're converting "No [recording not played on radio] is [one record companies believe will be profitable]", we'll get All [recordings not are [not ones record companies believe played on radio] will be profitable] or not played ? not a recording record on radio companies believe will be profitable if transferred We know that Most classic jazz recordings are not played on radio, so according to this rule, Most classic jazz recordings are not recordings that record companies believe would be profitable. Thus, according to the first sentence, Most classic jazz recordings will not be transferred onto CD.

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

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