Question

what is the purpose of your head restraint? *
to give you a place to rest your head
to support your neck
to reduce whiplash in a collision
to reduce concussions

Explanation:

Head restraints in vehicles are designed to limit head movement during a collision, especially rear - end collisions, to reduce the risk of whiplash (neck injury from sudden movement). Resting the head is not the main purpose, supporting the neck is not the key function here, and reducing concussions is not the primary role of a head restraint.

Answer:

C. To reduce whiplash in a collision