Which of the following is not checked during an exterior pre-trip inspection?

During an exterior pre-trip inspection, drivers are required to check various components of the vehicle to ensure safety and proper functioning before hitting the road. The correct answer indicates that the rear-view mirror is typically not part of this external inspection process. Instead, the rear-view mirror is generally adjusted from the inside of the vehicle for the driver's optimum visibility and is usually checked during an interior inspection or when the driver is seated in the vehicle.

In contrast, tires are checked for proper inflation and tread depth, as they are crucial for traction and handling. The windshield is examined for any cracks or obstructions that could impair the driver's view, and the ground under the vehicle is inspected for any fluid leaks that could indicate mechanical issues. Each of these components plays a significant role in ensuring that the vehicle is roadworthy, while the rear-view mirror's adjustment is more of an operational check than a safety-related inspection in the context of pre-trip procedures.