Answer :
Final answer:
An appositive phrase renames a noun or pronoun in a sentence and is set off by commas. Sentence (b) contains an appositive phrase: 'The car, a red convertible.'
Explanation:
An appositive phrase is a noun or pronoun that renames another noun right beside it, usually set off with commas. In sentence (b), "The car, a red convertible," contains an appositive phrase because "a red convertible" renames the noun "car." This appositive phrase provides additional information about the car, specifying its type.
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