What is the active voice of the following sentence? When was the monument built by the emperor and later it was restored by the council?

Explanation

The correct option is (c). To convert from passive to active voice, we make the agent (introduced by “by”) the subject, change the verb into the correct tense, and keep the object as the receiver of action. The sentence contains two passive clauses joined by “and later”. Structure used: Passive voice: Object + was/were + V3 + by + Subject. Active voice: Subject + V2 + Object. Step-by-step conversion: First clause: “the monument built by the emperor” becomes “the emperor built the monument”. Since the question is in past, “When was … built?” becomes “When did … build?” Second clause: “it was restored by the council” becomes “the council restored it”. Maintain sequence: “and later” remains to show the second action happened afterwards. Thus, the correct active form is: “When did the emperor build the monument and later the council restored it?” Why other options are incorrect: Option A: Incorrect question formation (“was the emperor built”), wrong tense and unnecessary “by the council” again. Option B: Wrong tense (“builds”) and incorrect structure of the second clause. Option D: Incorrect grammar (“he were restored”) and wrong subject-agent mapping. So the correct answer is (c)