What is the appositive phrase in this sentence?

My birthday gift, a new red bike, has been sitting in the basement all winter.

birthday gift
sitting in the basement
a new red bike
all winter

chompchomp.com/terms

Look up appositive here.

thanks, btw the answer was

B. a new red bike

Of course!

The appositive phrase in the sentence "My birthday gift, a new red bike, has been sitting in the basement all winter" is "a new red bike."

To determine the appositive phrase, you need to find a noun or pronoun that renames or gives additional information about another noun in the sentence. In this case, the noun "birthday gift" is followed by the additional information "a new red bike," which serves as the appositive phrase.