What should you check during a pre-trip inspection of the air brake system?

Answer: B — For air leaks, proper pressure levels, and condition of brake components

During a pre-trip inspection of the air brake system, it is essential to check for air leaks, proper pressure levels, and the condition of brake components. This is because air brakes rely on a specific air pressure to function effectively. Any leaks in the system can compromise braking ability, as they can lead to a drop in pressure needed to activate the brakes. Ensuring that the pressure levels are within the manufacturer's specifications is crucial; inadequate pressure can result in decreased brake responsiveness. Additionally, inspecting the condition of brake components such as hoses, valves, and the overall brake assembly helps identify any wear or damage that could affect performance. This comprehensive approach to checking the air brake system enhances safety and reliability during operation.