What does a seatbelt do in the event of an accident?

Answer: B — Protects the driver and passengers from being thrown from the vehicle

A seatbelt plays a crucial role in enhancing passenger safety during a vehicle accident. Specifically, it secures the occupants in their seats, thereby preventing them from being ejected from the vehicle upon impact. This protection is vital because ejection significantly increases the likelihood of serious injuries or fatalities. While seatbelts do not prevent a vehicle from starting, decrease stopping distances, or primarily serve to increase comfort during drives, their main function in an accident scenario is to hold individuals securely in place. This reduces the force of impact on the body and helps distribute crash forces over stronger parts of the body, minimizing injury severity.