Respuesta :
The sentence that correctly uses commas to separate the nonessential element is: The James Madison Memorial Building, built in 1981, houses the Folger Shakespeare Library. The phrase "built in 1981" is enclosed with a pair of commas because this is just an additional information about the subject and can be omitted without affecting the whole thought of the sentence.
Answer:
B-The James Madison Memorial Building, built in 1981, houses the Folger Shakespeare Library.
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