OpenSAT

Question #N1387

The process of photosynthesis involves a series of steps, each requiring energy, that result in the conversion of light energy into chemical energy that plants use to grow. Which of the following choices is the best way to punctuate the sentence?

The process of photosynthesis involves a series of steps, each requiring energy, that result in the conversion of light energy into chemical energy that plants use to grow.

A. The process of photosynthesis involves a series of steps, each requiring energy, that result in the conversion of light energy into chemical energy that plants use to grow.

B. The process of photosynthesis involves a series of steps, each requiring energy that result in the conversion of light energy into chemical energy that plants use to grow.

C. The process of photosynthesis involves a series of steps, each requiring energy, that result in the conversion of light energy into chemical energy that plants use to grow.

D. The process of photosynthesis involves a series of steps, each requiring energy that result in the conversion of light energy into chemical energy, that plants use to grow.

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Correct Answer is: C

The best way to punctuate the sentence is to use a comma after "energy" and after "energy" because the phrases "each requiring energy" and "that result in the conversion of light energy into chemical energy that plants use to grow" are nonrestrictive and should be set off with commas. The comma after "energy" correctly separates the nonrestrictive phrase "each requiring energy." The comma after "energy" correctly separates the nonrestrictive phrase "that result in the conversion of light energy into chemical energy that plants use to grow." All the other choices either incorrectly use no commas or incorrectly use a comma and a conjunction.