Answer: C) Subject: you . Verb: have visited.
Explanation: The subject of a sentence is the person, place, thing, or idea that is performing the action. A complete verb includes the main verb and all of the helping verbs. To be considered a verb, it must describe a condition or an action and indicate tense. In the given sentence the subject is "you" and the complete verb is "have visited" where "have" is the helping verb and "visited" indicates the action.