Select the option that expresses the given sentence in passive voice.
The guard refused him admittance.

Correct option is B

“He was refused admittance by the guard.” is correct passive voice. This option correctly uses the past tense "was refused" to reflect the action taken by the guard in denying entry. It shifts the focus from the actor (the guard) to the recipient of the action (him), which is a characteristic of passive voice. Grammatical rule used: In passive voice constructions, the object of the active sentence becomes the subject of the passive sentence, and the verb is accompanied by an appropriate form of the verb "to be" followed by the past participle. Example: The application was denied by the committee due to incomplete information.