An area not covered by your mirrors
Modern vehicles provide the driver with well-positioned mirrors which are essential to safe driving. However, they cannot see every angle of the scene behind and to the sides of the vehicle. This is why you must check over your shoulder so that you are aware of any hazards not reflected in your mirrors.
B An area covered by your right-hand mirror
C An area not covered by your headlights
D An area covered by your left-hand mirror