Which items must be checked during a pre-trip inspection of an emergency vehicle to ensure safety and readiness?

• A. Brakes, tires and tread depth, all exterior and interior lights and sirens.
• B. Fluid levels (engine oil, coolant, brake fluid, transmission/auxiliary fluids, power steering), battery and charging system, belts and hoses, exhaust system for leaks.
• C. Emergency equipment and its securement, seat belts and airbags, overall vehicle structure and condition.
• D. Brakes, tires and tread depth, all exterior and interior lights and sirens, horns, mirrors and windshield, wipers and washers, fluid levels (engine oil, coolant, brake fluid, transmission/auxiliary fluids, power steering), battery and charging system, belts and hoses, exhaust system for leaks, emergency equipment and its securement, seat belts and airbags, and overall vehicle structure and condition.

Answer: (D)