What should you do if your car has a two-part system seatbelt?

Answer: C — Use both the shoulder and the lap belt

Using both the shoulder and the lap belt is essential for maximizing safety while driving. A two-part system seatbelt is designed to provide greater protection in the event of a collision. The lap belt helps to secure the lower part of your body and prevents you from sliding forward, while the shoulder belt protects your upper body and reduces the risk of injury during an impact. Wearing both components of the seatbelt ensures that the forces exerted during a crash are distributed more evenly across your body, thereby minimizing the risk of severe injuries. It is important to wear both belts properly; the lap belt should fit snugly across the hips, and the shoulder belt should cross over the collarbone and chest, avoiding any areas that might cause injury. The alternatives to using both belts compromise safety, as relying on only one belt may leave parts of your body unprotected in the event of an accident.