Final answer:
The responsibility for ensuring that loads are secure during operation primarily falls on the driver. They must confirm cargo security before transport and make necessary adjustments en route.
Step-by-step explanation:
When it comes to securing loads during transport, the responsibility primarily falls on C) The driver. The driver must ensure that the cargo is properly secured before starting the journey, as they are in control of the vehicle during operation. It's essential for the safety of the driver, the safety of others on the road, and the protection of the goods. While the companies involved in loading and receiving the goods also have responsibilities to ensure the goods are packed correctly for transport, the legal responsibility for the load once it is in transit rests with the driver. This includes ongoing checks and adjustments that may need to be made en route.