What types of materials must be handled by medical personnel?

The correct choice is focused on the specialization and unique requirements for handling materials that specifically involve health and safety considerations. Medical personnel are trained to manage etiological agents and biological research material because these substances can pose significant risks if not handled correctly. This includes understanding the appropriate protocols for containment, storage, and disposal to prevent biological hazards or contamination.

This expertise is crucial, as improper handling could lead to serious health risks not just for the personnel involved, but also for the broader community. Additionally, regulations and safety guidelines, such as those outlined by agencies like the Centers for Disease Control and Prevention (CDC), further emphasize the importance of trained medical staff in managing these sensitive materials.

While general cargo, fragile items, food items, and perishable goods are also important in logistics and supply chains, they do not require the specialized medical training that handling biological materials does. Therefore, the correct response highlights the specific role medical personnel play in ensuring safety and compliance with health standards.