A、  B、  C、  B“需要租车”这句话带有“要是能借我用一下车就好了”的拜托之意。(B)中的what happened to…?是“……发生了什么事?”的意思，但在这里是反问“你的车怎么了?”的反问句，所以(B)是最恰当

Where is the nearest cash machine located?
(A)It’s all done by hand.
(B)Just across Broad Street.
(C)Cash and checks only.

I need to rent a car tomorrow.
(A)Thanks for lending it.
(B)What happened to your car?
(C)He borrowed mine before.