Final answer:
The given sentence “This farmer grows vegetables on his farm” can be changed to passive voice as “Vegetables are grown on his farm by this farmer.”
Step-by-step explanation:
The voice of the given sentence “This farmer grows vegetables on his farm” can be changed from active voice to passive voice. In the passive voice, the subject of the sentence becomes the recipient of the action. Therefore, the sentence in passive voice would be: “Vegetables are grown on his farm by this farmer.”
Learn more about Active and Passive Voice