Which voice is used in the sentence: "The consultant wrote a proposal"?

In the sentence "The consultant wrote a proposal," the active voice is utilized. This is evident because the subject of the sentence, "the consultant," performs the action of writing. In active voice constructions, the subject directly acts upon the object, making the sentence straightforward and clear. The focus is on who is doing the action rather than receiving it.

Active voice tends to create a more engaging and dynamic reading experience since it emphasizes the subject's role. This contrasts with the passive voice, where the subject receives the action rather than performing it. The other choices related to tense, such as future and present perfect, do not apply in this case because the sentence is simply describing a past action without additional time context.