What is the primary purpose of a seatbelt?

The primary purpose of a seatbelt is to keep passengers secure and minimize injury in a collision. Seatbelts are designed to restrain occupants of a vehicle during sudden stops or collisions, preventing them from being thrown forward or ejected from the vehicle. By securing individuals in their seats, seatbelts significantly reduce the risk of severe injuries and fatalities in accidents. This life-saving function is supported by extensive research and statistics indicating that wearing a seatbelt dramatically increases the chances of surviving a crash.

In contrast, the other options do not accurately reflect the critical safety function that seatbelts serve. They do not serve as a fashion accessory, provide back support, or assist in vehicle control. Ultimately, the effectiveness of seatbelts in protecting occupants underscores their vital role in vehicle safety.