Which items should be inspected under the hood before driving?

The correct response highlights critical components that should be inspected under the hood before driving a commercial vehicle. Checking the oil level is essential because it ensures the engine is properly lubricated, which prevents overheating and mechanical failures. Evaluating the condition of belts and hoses is crucial as well, since any wear or damage can lead to serious breakdowns; belts drive important components like the alternator, while hoses carry essential fluids, including coolant and oil. Additionally, inspecting electrical wiring helps identify any potential shorts or connection issues that could affect the vehicle’s performance or safety.

The other choices include components that, while important for vehicle operation, are typically checked outside of the hood. Steering wheel condition and tire pressure pertain more to the vehicle's steering and overall safety, while windshield wipers and headlights relate to visibility and road safety. Fuel level and brake fluid, though vital for operating the vehicle, are managed in separate checks that do not require access under the hood. Thus, focusing on these under-hood components ensures a more thorough safety check before setting out on the road.