Correct option is A
The correct active voice of the given sentence is (a)
People say that he thrashed a policeman.
Explanation: The structure “He is said to have done something” in passive form changes to “People say that he did something” in active form.
Structure:
Passive Voice: Subject + is/are + said + to + have + V3
Active Voice: People + say/said + that + subject + V2
Example:
Passive: She is said to have won the prize.
Active: People say that she won the prize.
Why other options are incorrect:
· (b) “are saying” – present continuous tense; incorrect for habitual statement.
· (c) “have said” – present perfect; changes meaning.
· (d) “said” – simple past; not suitable as per original tense “is said.”