Which of the following is considered an essential pre-trip activity?

Checking tire pressure is crucial as part of the pre-trip activities for several reasons. Proper tire pressure directly affects the vehicle's handling, fuel efficiency, and overall safety. Under-inflated tires can lead to increased tire wear, lower fuel economy, and a higher risk of tire blowouts, particularly when carrying heavy loads. Additionally, over-inflated tires can also be hazardous, leading to reduced traction and the potential for accidents.

Ensuring that the tires are at the recommended pressure levels is a fundamental part of vehicle maintenance and safety checks before embarking on a trip. This practice not only helps in achieving optimal fuel efficiency but also contributes to the overall longevity of the tires, reducing roadside emergencies and maintaining compliance with safety regulations.

While activities such as filling the fuel tank, washing windows, and reviewing the delivery schedule may be important for operational readiness, they do not carry the same weight in terms of safety and vehicle performance as checking tire pressure does.