—Haven't you seen the speed limit sign?please driveA more slowly a bitB slowly a bit moreC a bit more slowlyD slowly more a bit选哪一个?解释一下

—Haven't you seen the speed limit sign?please driveA more slowly a bitB slowly a bit moreC a bit more slowlyD slowly more a bit选哪一个?解释一下
—Haven't you seen the speed limit sign?please drive
A more slowly a bitB slowly a bit moreC a bit more slowlyD slowly more a bit选哪一个?解释一下

—Haven't you seen the speed limit sign?please driveA more slowly a bitB slowly a bit moreC a bit more slowlyD slowly more a bit选哪一个?解释一下
C
看到限速的标识了吗
请稍微开慢一点

C，a bit more slowly。a bit more固定用语，意思是更多一点，用来修饰 slowly.
句子意思是：你没看到限速牌子么？请开慢点。