Question

how do head restraints protect the driver in impacts?
they protect the head and neck in rear impacts.
they catch the head during rebound.
both a and b
none of the above

Explanation:

Head restraints are designed to prevent excessive backward movement of the head during rear - end collisions (protecting head and neck) and also catch the head during rebound to reduce the risk of whiplash and other injuries.

Answer:

C. both A and B