Correct Answer: The crops in several districts of Rajasthan are being attacked by the pink locusts.

Solution : The correct choice is the third 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 present continuous tense in the passive form is: "Plural object + are being + past participle of the main verb + by + agent of the action."

Therefore, the passive voice would be: " The crops in several districts of Rajasthan are being attacked by the pink locusts. "