What is the purpose of a safety belt in a commercial vehicle?

Answer: C — To keep you secure during a crash or sudden stop

The primary purpose of a safety belt in a commercial vehicle is to keep you secure during a crash or sudden stop. Safety belts are designed to restrain the occupant, significantly reducing the risk of injuries and fatalities in the event of a collision. They work by distributing the force of a crash over the stronger parts of the body and preventing the occupant from being ejected from the vehicle, which is crucial for survival during an accident. While there are other benefits related to driving comfort, vehicle control, and fatigue prevention, those are not the main function of a safety belt. Their primary role is life-saving, emphasizing why understanding and utilizing safety belts correctly is vital for all commercial vehicle operators.