What is the purpose of automatic seat belt and air bag systems?

The purpose of automatic seat belt and air bag systems is fundamentally centered on enhancing passenger safety during vehicular accidents. These systems are designed to prevent or reduce bodily injury by providing critical protection in the event of a collision. Automatic seat belts help ensure that occupants are securely restrained in their seats, thereby minimizing the risk of being thrown forward or ejected from the vehicle. Airbags, on the other hand, deploy rapidly in a crash to cushion the impact for the occupants, significantly reducing the likelihood of serious injuries, particularly to the head and chest areas.

In essence, while other listed options might touch upon aspects related to vehicle safety or design, the primary goal of seat belts and airbags is indeed to safeguard individuals within the vehicle during an accident, making the third option the most accurate and effective description of their purpose.