Logical ReasoningDifficulty: Medium

PT105 S1 Q18 Explanation

Sociologist: The intended function of

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

TopicsNecessary Assumption

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Stimulus

Sociologist: The intended function of news is to give us information on which to act. But in a consumer society, news becomes a product to be manufactured and dispensed to the consumer. An enormous industry for the production and consumption of news has evolved, and we ingest news is primarily entertaining and cannot, therefore, serve its intended function.

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
18.

Which one of the following is an assumption on which the sociologist's

Answer choices

  1. Too Strong: should not15% picked this

    News that serves its intended function should not

    This answer choice is tempting because it connects the concepts of entertainment and intended function. However, it states that news servicing its intended function should not be entertaining at all, which goes beyond what the sociologist needs to assume. The crucial point is whether being primarily entertaining stops it from fulfilling its intended function, not that it shouldn't entertain at all.

  2. Out of Scope: viewers' preferences1% picked this

    Most viewers prefer that news be

    This answer discusses the preferences of most viewers, which the argument never directly addresses. The conclusion revolves around the outcome of news as entertainment, rather than the preferences leading to its design in that way. (The word "most" is wrong on Nec Assump 99% of the time we see it)

  3. Too Strong: only one function3% picked this

    News has only one important

    While the sociologist emphasizes one function of the news, the argument doesn't require that news has only one important function. This claim is about how well news can serve its intended informational role, regardless of whether it may have other roles as well.

  4. Correct79% picked this

    News that primarily entertains does not give us information on which

    Why this is right

    This choice provides the missing link: if news is primarily entertaining, then it won't fulfill its intended function of providing actionable information. It addresses the core conflict identified in the argument—the assumed incompatibility between being primarily entertaining and serving its intended function.

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

  5. Too Strong: inevitably3% picked this

    A news industry that aims to make a profit inevitably presents

    The argument isn't concerned with whether a profit-seeking news industry always presents news as entertainment. Instead, it's focused on whether currently, under these consumer society circumstances, the entertaining nature prevents news from being actionable.

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