Select the option that expresses the given sentence in passive voice.
Authorities denied his simple request.

Correct option is D

Active Voice: In Active voice the subject is the one doing the action.
Passive Voice: In Passive voice the subject is the recipient of the action.

The correct passive voice of the given sentence is (d) His simple request was denied by authorities.

Rule of Transformation:

Tense: Simple Past

• Active Structure: Subject + V2 + Object
• Passive Structure: Object + was/were + V3 + by + subject

Active: Authorities (subject) + denied (V2) + his request (object)
Passive: His request (object) + was denied (was + V3) + by authorities

Example:

• Active: They delivered the parcel.
• Passive: The parcel was delivered by them.

Information Booster:
In Simple Past, always use “was/were + V3” for passive formation.