Passive form of 'Who spoke it' ?

A It was spoken by whom ?

B By whom was it spoken ?

C By whom it was spoken

D By whom it has been spoken ?

Correct Answer: Option B

Active voice -এ who থাকলে Passive করার সময় By whom হয় । এরপরে Subject ও Tense অনুযায়ী Auxiliary verb + subject + vpp + প্রশ্নবোধক চিহ্ন ।