Which of the following is essential for a successful safety inspection?

A successful safety inspection encompasses several critical components that ensure the vehicle is safe for operation on the road. Each item listed in the choices plays a vital role in vehicle safety, reinforcing the idea that comprehensive checks are necessary rather than focusing on any single aspect alone.

The cleanliness of the windshield is important as it affects visibility for the driver, which is crucial for safe driving. If a windshield is dirty or obscured, it can hinder the driver's ability to see clearly and respond to road conditions, making it a significant factor in safety inspections.

Operational lights are also essential. All vehicle lights, including headlights, brake lights, turn signals, and hazard lights, need to function correctly. These lights communicate the vehicle's intentions to other road users, providing visibility from both the vehicle's perspective and that of others on the road, which is fundamental for preventing accidents.

Functional seatbelts are a non-negotiable element of vehicle safety. Seatbelts are designed to protect occupants during a crash and their effective function directly correlates with the level of safety for drivers and passengers alike. Non-working seatbelts can lead to severe injuries during accidents, so their operational status is a key component of any safety inspection.

Given that each of these aspects contributes significantly to the overall