Which of the following helicopters is used specifically for cargo transport missions?

The CH-53D is specifically designed for cargo transport missions, making it the correct choice. This helicopter, part of the Sikorsky CH-53 series, is known for its large carrying capacity and powerful engines, which enable it to lift heavy loads and transport them over considerable distances. Its configuration is optimized for logistical support, allowing for the movement of supplies, equipment, and troops in various operational environments.

In contrast, the MH-60R is primarily utilized for maritime intelligence and anti-submarine warfare, while the HH-60H is designed mainly for search and rescue missions and combat search and rescue operations. The AH-1Z, being an attack helicopter, focuses on close air support and engagements rather than cargo transport, further emphasizing the specialized role of the CH-53D in logistics and cargo transport operations.