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what is the purpose of a rearview mirror in a car?
a)the mirror allows the light to be absorbed so the driver will not see any glare.
b)the mirror allows the light to interfere so the light waves combine to form an image.
c)the mirror allows the light to be reflected so the objects behind the car can be seen.
d)the mirror allows the light to be transmitted so the light will not reach the driver's eyes.

C) The mirror allows the light to be reflected so the objects behind the car can be seen.

Explanation:

Every driver needs to know or see what's behind them especially for security purposes and this is one of the purposes a rear view mirror serves.

The mirror also helps to reduce glare reaching a driver's eyes as the angle can be adjusted depending on the time of the day but most especially at night as other drivers behind would have their head lights on.

Adjusting the rear view mirror helps to reduce the glare so that the driver can see what's behind without being affected by excessive glare.