What works together to absorb impacts?

The correct choice highlights the dual structure of a hard hat, which is designed specifically to absorb impacts and protect the wearer. The hard outer shell of the hard hat is engineered to disperse the force of falling objects or impacts, preventing them from transferring directly to the head of the wearer. The inner suspension system adds a critical layer of protection by creating a space between the hard shell and the head, which helps to absorb shock and further reduce the risk of injury.

This combination ensures that when an object strikes the hard hat, the outer shell spreads the impact force over a larger area, while the inner suspension system helps cushion the blow and minimizes the risk of head trauma. Understanding this interaction is key for anyone working in environments where head protection is necessary, as it emphasizes the importance of proper equipment for safety.