X : Mike swept the floor yesterday Y : Good. the floor be sweeping by Mike the floor is sweeping by Mike the floor is swept by Mike the floor was swept by Mike the floor has swept by Mike

D.

The question appears to be determining the proper phrase or sentence to convey that Mike carried out the action of sweeping the floor yesterday in passive voice. Correct passive voice construction involves using “be” in addition to the past participle form of the verb. The correct tense must also be maintained and a past action will require the verb "be" to be in its past form "was"."Auxiliaries" are supportive verbs used with the main verb to show tense, mood, voice, etc. In the third sentence ("the floor is swept by Mike."), the auxiliary 'is' combines with the verb "swept" to create present tense, whereas the target action occurred in the past. Past tense is usually formed by using "was" or "were" before the verb.Thus "the floor was swept by Mike" is the correct sentence.