What should be checked during a brake system inspection?

Answer: B — Brake pads, rotors, brake lines, and air pressure in the system

The correct choice involves a comprehensive assessment of critical components of the brake system to ensure safe operation of the vehicle. During a brake system inspection, it is essential to check brake pads and rotors because they are vital for effective stopping power; they wear down over time and can significantly affect braking performance if not maintained. Additionally, inspecting brake lines is crucial, as they are responsible for transmitting hydraulic fluid to the brake components. Any leaks or damage in the brake lines can lead to brake failure, making it a key focus during an inspection. Furthermore, checking the air pressure in the system is particularly important in air brake systems, as insufficient pressure can compromise braking performance and safety. The other options focus on limited aspects of the brake system or different vehicle systems entirely. For example, solely checking brake pads and rotors omits critical components like brake lines and air pressure, which could lead to overlooking potential safety hazards. Similarly, inspecting only brake lights and signals pertains to vehicle safety but does not assess the performance of the braking mechanism itself. Lastly, checking brake fluid levels is important but should be part of a broader inspection that evaluates the overall functionality and integrity of the brake system. This thorough approach ensures that all factors affecting braking performance are considered, promoting safe vehicle operation