Which verb type does not require a direct object to complete its meaning?

Intransitive verbs are characterized by their inability to take a direct object, meaning they can stand alone without needing to connect to an object to convey a complete thought. For example, in the sentence "She runs," the verb "runs" is intransitive because it does not require any additional information or a direct object to make sense; the action is complete with just the subject performing the action.

This contrasts with transitive verbs, which necessitate a direct object to complete their meaning, and linking verbs, which connect the subject to a subject complement but do not express action themselves. Causative verbs typically indicate that one entity causes another to perform an action and often involve a direct object as part of a larger structure. Thus, intransitive verbs uniquely serve as the answer to the question as they function independently without a direct object.