Question stomat

3.1 Boundaries - Parenthetical punctuation: commas, dashes, parentheses
0:00

Stomata, tiny pore structures in a leaf that absorb gases needed for animal growth, open when guard cells surrounding each pore swell with water. In a pivotal 2007 article, animal cell blank showed that lipid molecules called phosphatidylinositol phosphates are responsible for signaling guard cells to open stomata. 

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

A.

biologist, Yuree Lee

B.

biologist Yuree Lee,

C.

biologist Yuree Lee

D.

biologist, Yuree Lee,

Stomata, tiny pore structures in a leaf that absorb gases needed for animal growth, open when

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 the use of punctuation between titles and proper nouns. No punctuation is needed to offset the proper noun "Yuree Lee" from the title "animal cell biologist" that describes Lee.

Choice A is incorrect because no punctuation is needed. Choice B is incorrect because no punctuation is needed. Choice D is incorrect because no punctuation is needed around the proper noun "Yuree Lee." Setting the phrase off with punctuation suggests that it could be removed without affecting the coherence of the sentence, which isn’t the case.