I was late to the meeting because I couldn't find the room.Group of answer choicesprepositional phrase functioning adverbiallyadverb clauseadverb phrase

To analyze the given sentence “I was late to the meeting because I couldn't find the room,” and identify the grammatical structure of the phrase “because I couldn't find the room,” we will evaluate the options provided.

1. Prepositional Phrase Functioning Adverbially: A prepositional phrase typically begins with a preposition and includes a noun or pronoun. In this case, “because I couldn't find the room” does not fit this description.

2. Adverb Clause: An adverb clause is a group of words that contains a subject and a verb and functions as an adverb. The clause “because I couldn't find the room” provides a reason for being late, hence it functions as an adverbial clause.

3. Adverb Phrase: An adverb phrase does not necessarily contain a subject and verb; rather, it modifies verbs, adjectives, or other adverbs. The phrase in question has a subject and a verb, ruling out this option.

Based on this analysis, the correct answer to the function of the phrase "because I couldn't find the room" is:

Final Answer

Adverb clause.