What should be ensured regarding the side of the vehicle during inspection?

During a pre-trip inspection, it is essential to ensure that the hinges of the vehicle's doors are functioning properly. This is important because operational hinges allow doors to open and close securely, ensuring that the vehicle is safe to operate. Proper functioning hinges prevent potential accidents or issues, such as doors swinging open while driving, which could pose a risk to both the driver and surrounding vehicles.

When hinges are in good condition, they contribute to the overall structural integrity of the vehicle, prevent excessive wear on door handles and seals, and ensure that cargo doors can be secured tightly, which is crucial for loading and transporting materials safely. This aspect of the inspection contributes to the overall safety and reliability of the vehicle, which is why it is a key focus during the pre-trip inspection process.

The other options represent issues that would be detrimental to vehicle operation or safety. Loose mirror brackets, broken door handles, and neglecting to check front or side steps would compromise safety and functionality, making them inadequate choices during the inspection process.