What type of equipment is commonly used in aerial deliveries?

The correct answer encompasses the equipment specifically designed and utilized for aerial deliveries, which are crucial in military operations for transporting supplies, equipment, or personnel directly to the ground from an aircraft.

Cargo parachutes are designed to deploy in the air and allow cargo to descend safely to the ground, cushioning the landing to prevent damage to the items being transported. Sling systems enable the secure transfer of heavy loads suspended beneath helicopters, allowing for the transport of larger cargo that may not fit inside the aircraft. Aerial delivery platforms provide a structure from which cargo can be deployed, ensuring stability and safety during the drop sequence.

This combination of equipment is specifically engineered for the reliable and efficient delivery of supplies and is essential in various military operations, making them the correct answer in the context of the question. Other options mention equipment that, while related to aviation or outdoor activities, do not specifically address the equipment used for aerial deliveries in a military context.