What does it indicate if the cargo load shifts during transport?

The indication of a cargo load shifting during transport is a significant safety concern. When cargo shifts, it demonstrates that the load may not be properly secured, which poses a risk not only to the driver but also to other road users. An unsecured load can affect the vehicle's balance and may lead to loss of control, increasing the likelihood of accidents. Ensuring that cargo is secured appropriately is crucial for safe transport and mandates adherence to safety regulations and best practices. Therefore, option B accurately reflects the importance of proper load security in maintaining safety during transit. The other options do not adequately recognize the potential hazards associated with shifting loads, which is why they are not suitable answers.