Which of the following sentences is in the passive voice?
Correct: B
The correct answer is B) The report was written by the manager. This sentence is in the passive voice because the subject (the report) is having the action (being written) performed on it, rather than performing the action itself. In contrast, the active voice would have the subject performing the action, as in choice A. Choice C is incorrect because while it is in the passive voice, it is not the best answer because it is in the present continuous tense, whereas choice B is in the simple past tense. Choice D is incorrect because it is in the active voice.