What should you inspect regarding the chassis components?

Inspecting the chassis components is crucial for ensuring the overall safety and functionality of the vehicle. Focusing on the structural integrity of the chassis, such as checking for cracked or broken frames, is essential because any damage can significantly compromise the vehicle's ability to handle road stresses and protect the driver and passengers in the event of an accident. Ensuring that all mounting bolts are tight is equally important, as loose bolts can lead to instability and potential mechanical failures during operation. This thorough inspection helps maintain the vehicle’s reliability and extends its lifespan, making it a key aspect of the pre-trip inspection process.

While the other options may involve important checks, they pertain to different parts of the vehicle rather than the chassis itself. For instance, checking windshield wipers relates to visibility, wheel alignment impacts handling, and tire condition is essential for traction and safety, but none are directly tied to the structural integrity of the chassis.