Select the option that expresses the following sentence in passive voice.
The waiter had meticulously served the customers their meals before leaving his duty.

Correct option is A

The correct passive voice of the given sentence is "The customers had meticulously been served their meals by the waiter before leaving his duty."
Explanation:
· The given sentence is in past perfect tense ("had served").
· Passive structure: Had + been + past participle (served).
Correct Structure:
· Active: The waiter had meticulously served the customers their meals before leaving his duty.
· Passive: The customers had been served their meals by the waiter before leaving his duty.
Incorrect Options:
· (b) Have been served – Incorrect; changes past perfect to present perfect.
· (c) Were being served – Incorrect; changes past perfect to past continuous.
· (d) Were served – Incorrect; does not retain past perfect tense.