Rewrite the sentence in active voice.
This picture had been drawn by me.

Correct option is A

Explanation: "This picture had been drawn by me" in past perfect passive voice correctly translates to "I had drawn this picture" in past perfect active voice, maintaining the timeline where the action was completed before a specified or implied past time.
Conversion Rule: Past perfect
Subject + had + V3 + object -> <- Object + auxiliary verb (had) + been + past participle + by + subject.
Example: The homework had been done by the students. -> The students had done the homework.