Select the correct passive form of the given sentence.
My friend writes a letter to his father.

Correct option is A

Active voice: The subject of the sentence does the action (e.g., The chef cooked the meal).
Passive voice: The subject of the sentence receives the action (e.g., The meal was cooked by the chef).
The correct passive voice of the given sentence is (a) A letter is written by my friend to his father.
Explanation:
· The sentence is in simple present tense.
· Rule:
· Subject + V1 + object.
· Passive: Object + is/are + V3 + by + subject.
Structure:
· My friend writes a letter...
· Passive: A letter is written by my friend...
Hence, correct passive voice: A letter is written by my friend to his father.