Which of the following checks is essential for vehicle safety before driving?

Examining tire pressure and tread is essential for vehicle safety before driving because tires play a critical role in vehicle stability, handling, and overall safety on the road. Proper tire pressure ensures that the tires make adequate contact with the road surface, which influences traction, braking distance, and fuel efficiency. Additionally, the tread depth is vital for maintaining grip, especially in adverse weather conditions such as rain or snow. Insufficient tread can lead to hydroplaning and significantly increases the risk of losing control of the vehicle.

While checking engine noise, testing horn functionality, and cleaning the windshield are all important aspects of vehicle maintenance and can contribute to safety, they do not have the same immediate impact on the fundamental aspects of driving safety as tire checks do. Engine noise may indicate a mechanical issue, but it does not directly relate to traction or stability. The horn is crucial for signaling, but its functionality does not affect the vehicle's movement or control. A clean windshield is important for visibility, but tires are the only contact point between the vehicle and the road, making their condition critical for safe driving.