Question

8. Which sentence contains a prepositional phrase?
Trey and his sister rarely agree with each other and don't share the same interests.
Because Trey enjoys scaring his sister, he often plans his jokes carefully.
Trey absolutely irritates his sister when he enters her room unannounced.
If Trey stops bothering his sister, his sister promises that she will bake him cookies.

Answer 1

The prepositional phrase answers the questions, "How, When, Where, or Which?", and is written as an adjective or an adverb.
Read the sentences carefully to see if any of those sentences answer the questions above.

First, second, and last are not prepositional phrase since they don't answer any questions.
However, the third sentence answers a question.

Q: How does Trey irritate his sister?
A: "...when he comes in the room unannounced."

Therefore, your answer is the third sentence, "Trey absolutely irritates his sister when he enters her room unannounced."