From the below, select the sentence that is grammatically correct and meaningful in the given context.
- ATractors are used by their fields to plough farmers.
- BBy farmers their tractors are used fields to plough.
- CTheir fields to plough tractors are used by farmers.
- DTractors are used by farmers to plough their fields.
Solution & Step-by-step Explanation
Option 'd' follows the standard passive voice structure: Subject (Tractors) + helping verb (are) + main verb past participle (used) + agent (by farmers) + purpose/infinitive phrase (to plough their fields). It delivers a clear and grammatically correct meaning.