Which one of the following sentences includes a prepositional phrase?
A. Because it was raining, Gladys stayed indoors.
B. He came when I was away.
C. Lois treasured her time off.
D. Terry and Rowena met Craig at the mall.
The correct answer is D) Terry and Rowena met Craig at the mall, where at the mall is a prepositional phrase. A prepositional phrase is a phrase which doesn't have a finite verb, and starts with a preposition, in this case at.
