Read the sentence. Marlena, who enjoys many different subjects, likes history and geography the best. Which part of the sentence is the nonrestrictive modifier?

A nonrestrictive modifier adds extra information about a noun but is not needed to identify it. In this sentence, “who enjoys many different subjects” adds information about Marlena; the commas set it off from the rest of the sentence. The correct choice is “who enjoys many different subjects.”

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