The semicolon can be placed after swimmer, that way the sentence is not fully finished but rather gives it a break
Verbs like am, is, are, was, were do not show action; they are verbs of being. They tell us about a state of being or existence. They don’t give any meaning but they are used to describe a subject. The be verbs are followed by a noun or an adjective or an adverb.
Im pretty sure the answer is D.
