Answer:
correct answer is Rear Sonar System
Explanation:
the correct answer is a rear sonar system
because it is parking aide that sound of tone and it help to driver for the detect object within approx. some distance in feet of rear bumper
and here beep will get faster sound when driver get more closer to the object and sound will continuous tone when it will be less than a foot away distance from the bumper
so here that correct answer is a rear sonar system
