Question in-his

3.1 Boundaries - Parenthetical punctuation: commas, dashes, parentheses
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In his Naturalis historia, Pliny the Elder praised Hipparchus’s star alog, a second-century BCE list of roughly 850 different stars’ celestial positions. For centuries, scholars dreamed about loing a copy of this legendary lost blank fantasy (partially) became reality in 2022, when researchers uncovered traces of the star alog on a palimpsest, a reused parchment.

Which choice completes the text so that it conforms to the conventions of Standard English?

A.

work, that

B.

work that

C.

work. That

D.

work and that

In his Naturalis historia , Pliny the Elder praised Hipparchus’s star alog, a second-century BCE list

Hard-difficulty · SAT Reading & Writing · Boundaries — Parenthetical punctuation: commas, dashes, parentheses. Read the question above, select your answer, and check the full explanation below to understand exactly why the correct choice works.

Answer explanation

Choice C is the best answer. The convention being tested is punctuation use between sentences. In this choice, the period is used correctly to mark the boundary between one sentence ("For…work") and another ("That…parchment").

Choice A is incorrect because it results in a comma splice. A comma can’t be used in this way to mark the boundary between sentences. Choice B is incorrect because it results in a run-on sentence. The sentences ("For…work" and "that…parchment") are fused without punctuation and/or a conjunction. Choice D is incorrect. Without a comma preceding it, the conjunction "and" can’t be used in this way to join sentences.