when the subject of a sentence performs the action in the sentence, the verb in the sentence is in the .

When the subject of a sentence performs the action in the sentence, the verb in the sentence is in the active voice. This means the subject is the agent doing the action, and the verb reflects this directly. For example, in "The dog bit the postal carrier," "the dog" is the subject performing the action "bit," which is an active verb. This contrasts with the passive voice, where the subject receives the action instead.