Which of the following tasks is part of daily bus inspections?

Checking oil, water, battery, and belts before starting the engine is an essential part of daily bus inspections. This practice ensures that all critical systems are functioning correctly and helps to identify any potential mechanical issues that could lead to breakdowns or safety hazards while on the road.

Starting with the oil level helps to determine if the engine has adequate lubrication, preventing damage. Water checks can indicate the coolant level, which is crucial for maintaining optimal engine temperature. The battery inspection ensures that it has sufficient charge and is free from corrosion, playing a vital role in starting the bus and maintaining electrical systems. Additionally, inspecting the belts ensures they are in good condition and properly tensioned, which is vital for the operation of various engine components.

While checking air conditioning, cleaning the interior, and testing the radio are important tasks for comfort and usability, they do not directly impact the safe operation of the bus or the essential mechanical systems before driving.