Free LSAT Practice Question

Question 1 of 1
ID: LSAT-LR-210
Section: Logical Reasoning
Topic: Assumption
Difficulty level: Medium

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Curator: Sheets mounted at this herbarium before 1960 are browner than those mounted since, and the older paste has been blamed. But the pre-1960 sheets spent forty years in the south room, whose windows admit strong afternoon light, and no later sheet has been out of the dark store. Light that strong browns plant tissue. So the paste is not what browned them.

The curator's argument depends on assuming which one of the following?

AThe sheets mounted before 1960 were exposed to the strong light of the south room, not merely stored there.

BThe south room is the only part of the herbarium where sheets mounted before 1960 met light strong enough to have browned them.

CSheets mounted with any paste at all, and not only with paste of the earlier kind, would have browned in the south room.

DThe herbarium has a record of which paste was used on the sheets it mounted.

ESheets mounted at this herbarium with paste of the earlier kind ought from now on to be kept out of light strong enough to have browned them.

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