Which type of vessel combines the characteristics of both an amphibious cargo ship and an amphibious assault ship?

The amphibious assault ship, particularly the Landing Helicopter Assault (LHA) variant, is designed to fulfill multiple roles that combine the capabilities of a cargo ship and an assault ship. These vessels are equipped to transport troops, supplies, and vehicles, while also serving as a platform for launching helicopters and conducting air operations.

The LHA is notable for its extensive flight deck and hangar space, allowing for the deployment of rotary-wing aircraft, which makes it vital for aerial support in amphibious operations. Additionally, it often has a well deck for launching landing craft and amphibious vehicles, thereby enhancing its logistical and assault capabilities.

This dual functionality allows the LHA to support a wide range of missions, from disaster relief and humanitarian assistance to full-scale amphibious assaults, making it a versatile and critical asset in modern naval operations. Other options, while also designed for amphibious missions, do not combine the operational characteristics of both an amphibious cargo ship and an assault ship to the same extent as the LHA.