Correct option is C
The correct passive voice of the given sentence is
(c) The computer was fixed by my father easily.
Definition:
·
Active voice: Subject performs the action (My father fixed...)
·
Passive voice: Subject receives the action (The computer was fixed...)
Structure:
· Active: Subject + Verb (Past) + Object
· Passive: Object + was/were + past participle + by + Subject
Example:
Active – She painted the wall.
Passive – The wall was painted by her.