The sentence that are defining a restrictive nonrestrictive clause are following:
Restrictive clause: essential to the sentence, needed to maintain meaning, and not set apart by punctuation
Nonrestrictive clause: Set apart by punctuation, not essential to the sentence.
A clause is a group of words that contain a subject and a verb. Restricted clause has unclear meaning and non-restricted clause has already clear meaning.
The options are attached:
Thus, the correct options are: Restrictive clause: essential to the sentence, needed to maintain meaning, and not set apart by punctuation
Nonrestrictive clause: Set apart by punctuation, not essential to the sentence.
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