In the following sentence, what type of verb is the bolded word? The crowd became restless while waiting for the concert to begin.

The verb "became" is a linking verb.

Explanation:

The bolded word in the sentence above is became;

Became, as used in the sentence acts as a linking verb.

A verb is said to be a linking verb if it describes the subject by connecting it to a predicate adjective or predicate noun.

Here, the verb "became" describes the crowd as being restless and it also linked their restlessness to their waiting for the commencement of a concert.

So, "became" as used in the above sentence and also going by the description above, the very is used as a linking verb.

Im pretty sure the bolded verb is restless