Correct option is A
The correct active form of the sentence is "They were giving a face-lift to the entire area."
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Active Voice- Active voice is a grammatical structure in which the subject of the sentence performs the action expressed by the verb.
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Passive Voice- Passive voice refers to a grammatical construction where the subject of a sentence undergoes an action rather than performing it. In passive voice sentences, the emphasis is on the recipient or object of the action.
The active voice should have the subject (They) performing the action (giving) in the present continuous tense.
Conversion rule:
Subject + was, were + verb + ing + object -> <- Object + auxiliary verb (was, were) + being + past participle + by + subject.