She is writing a letter.

A ) A letter is being written by her. ✅

B ) A letter is written by her.

C ) A letter was being written by her.

D ) A letter was written by her.


Explanation: Active voice formula: Subject + Verb + Object (She is writing a letter) Passive Voice Formula: Object + (Be+ V3)+ (By+ subject) A letter is being written by her.