You must ensure that the following items are secure on the vehicle:

To ensure safety while operating a commercial vehicle, maintaining load security is crucial. The correct choice emphasizes that the entire load must be secure, which includes all items being transported, not just those relevant to the cargo or the main load. This is essential for preventing accidents and ensuring compliance with transportation regulations.

By securing all items, such as gas cans and wheel chocks, you mitigate the risk of them shifting or falling during transit, which could lead to hazardous situations or damage to the vehicle and its cargo. The responsibility for load security is not limited to specific items; rather, it encompasses everything on the vehicle that could potentially pose a danger if not properly secured. This understanding aligns with safety regulations and best practices in the industry.

In contrast, options that suggest limiting the scope of secure items to only specific ones or claiming that it is solely the operator's responsibility fail to acknowledge the comprehensive nature of load security. Ensuring all items are secured is a standard that all drivers must uphold for safe operation.