15. The children were enjoying themselves at the culture show. The underlined part of the sentence is a/an __ A . participial phrase B. verb phrase C . indefinite phrase D . prepositional phrase 1 point

The correct answer is D. prepositional phrase.<br /><br />In the sentence "The children were enjoying themselves at the culture show," the underlined part "at the culture show" is a prepositional phrase. A prepositional phrase consists of a preposition (in this case, "at") followed by a noun phrase (in this case, "the culture show"). This phrase provides additional information about the location or context of the action described in the sentence.