How do airbags reduce the risk of injury in a collision?

Airbags are designed to work in conjunction with seat belts to enhance the overall safety of vehicle occupants during a collision. They inflate rapidly in the event of an accident, providing a cushion that absorbs some of the impact force and helps to prevent the occupant from hitting the interior components of the vehicle, such as the steering wheel or dashboard. This additional layer of protection significantly reduces the risk of serious injuries, such as head trauma or chest injuries.

While the other options discuss various protective measures, they do not correctly describe the function of airbags. For instance, airbags do not replace seat belts; instead, they complement them. Therefore, the most accurate understanding of how airbags contribute to safety is that they provide a supportive cushion that works in tandem with the restraining force of seat belts.