What is one benefit of having a properly functioning brake system?

Answer: C — Increased safety while driving

A properly functioning brake system is crucial for increased safety while driving. Brakes are the primary means by which a vehicle can slow down or stop, and their effectiveness directly impacts the driver's ability to respond to emergencies or changing driving conditions. This safety feature protects the driver, passengers, and other road users. When brakes are in optimal condition, they provide reliable stopping power, ensuring that the vehicle can be controlled effectively, especially in critical situations such as avoiding collisions or navigating downhill terrain. While reduced vehicle weight, improved fuel efficiency, and lower maintenance costs may be associated with various vehicle components or design efficiencies, they do not specifically relate to the critical function that brakes serve. The primary focus of a brake system is to ensure the safety and control of the vehicle, which is why increased safety is the most relevant benefit of having a properly functioning brake system.