In the event of a crash or sudden stop, how does a seatbelt help?

Seatbelts are designed primarily to enhance the safety of passengers in a vehicle during a crash or sudden stop. The correct choice highlights the critical role of seatbelts in restraining occupants, preventing them from sliding off the seat, colliding with the windshield, or being ejected from the vehicle.

In the event of sudden deceleration, the natural momentum of the body continues to move forward. A seatbelt provides the necessary restraint by holding the person securely in place, effectively reducing the risk of injury caused by hitting the interior of the vehicle or being thrown out, which can lead to severe consequences. By minimizing movement and keeping occupants within the protective confines of the car, seatbelts significantly lower the chances of serious injuries or fatalities in crashes.

Others options, while they may seem relevant, do not address the primary function of a seatbelt in the context of safety during a crash. For instance, preventing a driver from being pulled over is unrelated to safety measures during a collision. Additionally, steering ease isn't a function of seatbelts, nor do they directly affect braking speed. The focus should always be on a seatbelt’s ability to keep occupants safe during the dynamics of a crash.