OpenSAT

Question #N1218

A study was done in which researchers tried to determine the most effective method for people to conserve energy. In the study, researchers asked participants to identify the most effective action that people can take to save energy. The team then classified each action as either an efficiency (using a more efficient appliance or lightbulb) or a curtailment (using a bike or public transportation, or turning off the lights).

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

A. For example, turning off the lights, which was selected by 19.6 percent of respondents, is a curtailment.

B. For example, turning off the lights—which was selected by 19.6 percent of respondents—is a curtailment.

C. For example, turning off the lights, which was selected by 19.6 percent of respondents, is a curtailment;

D. For example, turning off the lights, which was selected by 19.6 percent of respondents, is a curtailment—

Reveal Answer Go Back

Correct Answer is: A

Choice A is the best answer. The convention being tested is punctuation between a preposition and its complement. No punctuation is needed between the preposition "of" and its complement, the noun phrase "healing, self-discovery, and memory." Choice B is incorrect because no punctuation is needed between a preposition and its complement. Choice C is incorrect because no punctuation is needed between a preposition and its complement. Choice D is incorrect because no punctuation is needed between a preposition and its complement.