What is the primary purpose of seat belts?

The primary purpose of seat belts is to hold you in your seat during a collision. In the event of a crash, a seat belt restrains the occupant, significantly reducing the risk of injury or ejection from the vehicle. This function is crucial because during a collision, the force of impact can cause a person to be thrown forward or sideways, leading to serious injuries or even fatalities. By keeping the driver and passengers securely in their seats, seat belts play a vital role in enhancing safety on the road.

The other choices, while they may touch upon aspects of driving or vehicle comfort, do not accurately represent the primary function of seat belts. Comfort while driving is not the main goal of seat belts, nor do they have a role in merely preventing law enforcement stops or providing lumbar support. The emphasis on safety and crash protection makes the correct answer clear and underscores the importance of wearing seat belts at all times while traveling in a vehicle.