Which part of the vehicle's electrical system is checked during the inspection?

The battery, wiring, and all lighting components are crucial elements of the vehicle's electrical system, which is why this option is correct. During a safety inspection, the battery's condition is assessed to ensure it holds a charge and is free from corrosion. The wiring is examined for any signs of damage or wear that could lead to electrical failures or short circuits, and this is also key to maintaining connections throughout the vehicle's electrical system. All lighting components, including headlights, taillights, turn signals, and brake lights, are checked to ensure they are operational, as visibility and signaling are essential for safe driving and compliance with legal requirements.

The other options, while they address important electrical components, do not encompass the full range of checks performed during a comprehensive safety inspection. For instance, while the alternator and starter motor are important for starting and powering the vehicle, they are not as comprehensive as the full spectrum of the battery, wiring, and lighting components. The ignition coil and spark plugs are specific to the ignition system and don't cover the electrical system holistically. Lastly, fuses and relays are also part of the electrical system but do not capture the broader operational safety aspects tied to lighting and battery integrity. Thus, the correct answer emphasizes the