Select the option that expresses the following sentence in active voice.
The car was repaired by the mechanic.

Correct option is D

The correct active voice of the given sentence is (d) The mechanic repaired the car.
Rule of Conversion from Passive to Active Voice:
1. Identify the subject in the passive sentence (the mechanic).
2. Use the appropriate tense of the verb (repaired).
3. Place the object of the passive sentence (the car) after the verb.
4. Structure:
· Active voice: Subject + verb + object.
· Passive voice: Object + auxiliary verb (be) + past participle + by + subject.
· Example: The book was written by her → She wrote the book.