Which of the following terms refers to the motorcycle's primary safety feature for a passenger?

The term that refers to the motorcycle's primary safety feature for a passenger is protective gear. This type of gear is essential for ensuring the safety of passengers in the event of an accident or a fall. It includes items such as helmets, gloves, jackets made from durable materials, and padded clothing that help reduce the severity of injuries.

While safety harnesses are commonly associated with vehicles that provide a restraint system for passengers, motorcycles do not typically have harness systems due to their design. An advanced braking system, while important for the overall safety and handling of the motorcycle itself, does not serve as a direct safety feature for the passenger. Passenger foot pegs provide a place for passengers to rest their feet, but they do not contribute to safety in the same way that protective gear does. Protective gear is the most critical element in minimizing the potential for injury among motorcycle passengers.