Question

Choose the most suitable passive voice conversion of the given sentence:
A bus knocked down a cow on the road.

• A. A cow knocked down with a bus
• B. A cow on the road was knocked by a bus
• C. A cow was knocked down on the road
• D. A cow was knocked down by a bus on the road

Answer 1

The correct option is D A cow was knocked down by a bus on the road

The passive voice is used when we want to focus attention on the person or thing affected by the action. We make the person or thing the subject of the sentence, here, the cow and use the passive voice. The preposition "by" is used to indicate agent, the bus. Hence, Option D is correct. The rest of the options do not follow the required structure, hence incorrect.