Why are seat belts important?

Seat belts are crucial for safety in a vehicle because they significantly reduce the risk of serious injury or death during an accident. When a vehicle collides or suddenly stops, occupants can be thrown forward with great force if not restrained. Seat belts are designed to secure passengers in their seats, minimizing movement and helping to absorb some of the energy generated by the crash. This protection is especially important given that unrestrained passengers can collide with the interior of the vehicle or be ejected from it, both of which can lead to severe injuries.

The other options do not accurately reflect the primary safety function of seat belts. While they may not keep you warm, ensure alertness, or merely serve a legal requirement, their most vital role is to enhance survival chances and reduce injury severity in the event of an accident.