Which one of the following sentences is written in the active voice? a. accidents are considered by most people as unavoidable. b. few people think seriously of doing something about accidents. c. accidents are witnessed everyday. d. it is said that definite steps can be taken to prevent many accidents

B. few people think seriously of doing something about accidents.

There are two main things to keep in mind when trying to determine whether a sentence is written in the passive voice or if it is written in the active voice.  First, passive voice is when the subject has the action done to it, and active voice is when the subject does the action.  Second, passive voice will always have linking/helping verbs.  That said, answers, “A,” “C,” and “D” have the action being done to the subject, and all three have linking/helping verbs in the form of “are” and “be.”  “B” is the only answer where the subject (in this case, “people”) is doing the action of “think” and has not linking/helping verbs.