Select the option that expresses the given sentence in passive voice.
His behaviour vexes me sometimes.

Correct option is C

The correct passive voice of the sentence is (c) I am sometimes vexed by his behaviour.
Explanation:
· Active voice structure: Subject + Verb + Object.
· Passive voice structure: Object + Auxiliary Verb (be) + Past Participle + by + Subject.
· In this sentence, "me" (object) becomes the subject in passive form, "vexes" changes to "am vexed," and "his behaviour" (subject) follows "by."
· Structure:
· Active: His behaviour vexes me.
· Passive: I am vexed by his behaviour.
· Example: The loud noise vexed her. (Active) → She was vexed by the loud noise. (Passive)