‘Who is doing the work?’ বাক্যের passive form হচ্ছে-

A By whom is the work being done?

B By whom is the work done?

C By whom was the work being done?

D By whom is the work has done?

Correct Answer: Option A

Who যুক্ত Sentence কে Passive voice এ রূপান্তরের নিয়ম: By Whom + be verb (Subject এর person অনুযায়ী) + Subject + being + Verb এর Past Participle.