Which one of the following sentences includes a prepositional phrase?

AHe came when I was away.
BBecause it was raining, Gladys stayed indoors.
CLois treasured her time off.
DTerry and Rowena met Craig at the mall.

Verified Answer :

Terry and Rowena met Craig at the mall.
"At the mall" being the prepositional phrase. I took that basic reading exam a few days ago and scored a 100%, dw I gotchu fam.

D: Terry and Rowen met Craig at the mall. At is a preposition.