What is the primary purpose of seat belts?

Answer: B — To keep occupants secure in their seats during a collision

The primary purpose of seat belts is to keep occupants secure in their seats during a collision. In the event of an accident, seat belts play a critical role in preventing occupants from being thrown from the vehicle or colliding with the interior parts of the car, which can significantly reduce the risk of serious injury or death. They are designed to restrain the body's movement and distribute the forces of a crash over stronger parts of the body, such as the chest and pelvis. This safety feature is a fundamental aspect of vehicle safety systems and is mandated in many jurisdictions to ensure that all passengers are protected while traveling.