USING CORRECT PUNCTUATION QUICK CHECK.

WHICH PHRASE DEFINES AN APPOSITVE?
a. a word or group of words that renames a noun.
b. a sentences of two independent clauses
c. a series of three or more items
d. a phrase of four words or more that begins a sentences

a. a word or group of words that renames a noun.

The correct answer is:

a. a word or group of words that renames a noun.