Answer: passive voice
there is no doer of the action and hope it is correct
I have no clue try Googling it
Your answer is B., because it is unidentifiable, so if they don't know the source, then why cite it right? :P :D So anyways, that's why your answer is B. =)
I hope I helped! =D
Answer:
what? wdym by "sentence a an"
Explanation: