What is the headrest?

What is the headrest?
A)It is a comfort element.
B)It is a decorative element of the vehicle.
C)It is an important safety element to prevent cervical injuries.Correct
The headrest is an important passive safety element that can significantly reduce the likelihood of suffering cervical injuries. Its proper adjustment is vital, both in the front seats and in the rear seats:
- The upper edge of the headrest should be positioned between the top of the head and eye level.
- There should be no gap between the driver's head and the headrest, or it should be as small as possible, never exceeding 4 cm.