Logical ReasoningDifficulty: Medium

PT110 S2 Q15 Explanation

Camera manufacturers typically advertise their

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

TopicsMain Conclusion

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Stimulus

Camera manufacturers typically advertise their products by citing the resolution of their cameras' lenses, the resolution of a lens being the degree of detail the lens is capable of reproducing in the image it projects onto the film. Differences between cameras in this respect are irrelevant for practical photography, however, since all than any photographic film is capable of reproducing in a developed image.

What this question is testing

Main Conclusion

Your task

Break the argument into its conclusion and evidence, then do exactly what the question stem asks with that structure.

Common trap

Answers that sound relevant to the topic but don't connect to the argument's actual reasoning.

Winning move

Predict what a right answer must do, then test each choice against the conclusion-evidence gap.

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

The question
15.

Which one of the following most accurately states the main point of

Answer choices

  1. Trap3% picked this

    Camera manufacturers ought to concentrate on building other desirable qualities into their cameras’ lenses, rather than concentrating only

    Never Mentioned What Else Might They Say This is a trap where they hope students will go for The Next Thing the author might say. But we're just trying to point back to something the author did say.

  2. Out of Scope16% picked this

    Apart from differences in resolution, there is no practical difference among modern cameras in the quality of the

    Out of Scope: apart from resolution Opposite The author is saying "as far as resolution goes, there is no practical difference". She hasn't said anything about possibly important differences between other features of modern cameras.

  3. Correct71% picked this

    Advertised differences among cameras in the resolution of their lenses have no practical bearing on the cameras’ relative

    Why this is right

    This is a meaning match for the 2nd claim, that "advertised differences [about resolution] are irrelevant for practical photograph".

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

  4. Never Mentioned2% picked this

    In concentrating their advertising on the issue of image quality, manufacturers are making a mistake about the interests

    The author's conclusion is just that "advertised resolution differences are actually meaningless to a customer on a practical level". She doesn't say The Next Thought ... "so these ad makers are dumb" / "so they should emphasize something else" / etc. Her argument is descriptive, not normative or prescriptive.

  5. Never Mentioned7% picked this

    Differences among photographic films in the amount of detail they reproduce have a more significant effect on the quality of the developed image than

    The author never talks about differences in film or how they might affect quality.

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