adjective. /ɡrin/ (greener, greenest) color. having the color of grass or the leaves of most plants and trees green beans Wait for the light to turn green (= on traffic lights).
The answer is C because she or he is giving reasons like its not reasonable to prepare at the last minute on an exam then you would fail. It also says that if you don't prepare for a marathon you''ll probably get last place like a low grade on a exam.
