Correct Answer: The fire and rescue team was being helped by Mahesh and his team.

Solution : The correct choice is the second option .

Passive voice is the voice in which the object experiences an action rather than the person who performs the action. Hence, the object in the active sentence becomes the subject in the passive voice.

The structure of the passive voice in the case of the past continuous tense is: " Singular object + was + being + past participle form of the verb + 'by' followed by the agent the action."

Therefore, the sentence in passive voice is: "The fire and rescue team was being helped by Mahesh and his team."