3. Choose the sentence that contains an adjectival prepositional phrase.

A. The game begins within an hour.

B. The dog ran around the table.

C. The tired campers rested underneath the tent.

D. The shoe store across the street recently opened.

The answer is D. The shoe store across the street recently opened.

The reason why is that the prepositional phrase "across the street" acts as an adjective to the noun "shoe store", causing "The shoe store across the street" to be a adjectival prepositional phrase.