Select the option that correctly expresses the given sentence in passive voice.
The teachers of our school have already taken this training.

Correct option is A

The correct passive voice of the given sentence is This training has already been taken by the teachers of our school.
To convert an active voice sentence to passive voice, follow these steps:
· Identify the subject, the verb, and the object in the active voice sentence.
· The object of the active voice sentence becomes the subject of the passive voice sentence.
· Change the verb to its past participle form. If necessary, use a form of "be" (is, are, am, was, were, be, been) and the past participle of the main verb. For modals (like might, may, can, could, etc.), the structure is usually modal + "be" + past participle.
· The subject of the active sentence becomes the object of the passive sentence (or is dropped).
· Active voice: Subject + has/have + Verb (V3) + Object.
· Passive voice: Object + has/have + been + Verb (V3) + by + Subject.
· In this sentence, "this training" becomes the subject in passive voice, followed by "has already been taken".
Example: The report has been completed by the team.