Question

Which one of the following sentences is written in the active voice?

Answer 1

The correct answer is D, because that is the only sentence written in the active voice, the rest are written in the passive voice. 

Answer 2

The correct answer is D.

In this sentence, the subject (few people) is actively performing the action denoted by the verb (think seriously of doing something about accidents.)

Therefore, it is a sentence in the active voice.

Options A, B and C are passive because the subjects are not active but insted are being acted upon by the verb.