What is the prepositional phrase in this sentence, and what does it modify?

The purpose of the last song was to show off all the musicians’ talents.

A. of the last song; an adjective phrase that modifies the noun purpose
B. to show off all the musicians’ talents; an adverb phrase that modifies the verb was
C. to show off; an adjective phrase that modifies the noun talents
D. off the musicians’ talents; an adverb phrase that modifies the verb show

I think A..

Yes. A is right.

The prepositional phrase in the sentence is "of the last song." This phrase modifies the noun "purpose." Therefore, the correct answer is A. of the last song; an adjective phrase that modifies the noun purpose.

To determine the prepositional phrase in the sentence and what it modifies, we need to identify the preposition and its object.

The prepositional phrase in the sentence is "of the last song." This phrase is modifying the noun "purpose."

So, option A is correct: "of the last song" is the prepositional phrase that modifies the noun "purpose."