Which aircraft is designed for amphibious assault and troop transport?

The MV-22B Osprey is specifically designed for amphibious assault and troop transport, making it a crucial asset for maritime operations. Its tiltrotor design allows it to take off and land like a helicopter while also providing the speed and range of a fixed-wing aircraft. This versatility enables the Osprey to operate in diverse environments, transition effectively from sea to land, and support various missions, including transporting Marines and cargo to and from ship-to-shore and beyond.

Additionally, the Osprey's ability to quickly deploy troops and equipment into contested areas enhances operational effectiveness in amphibious assaults, which are often a key component of Marine Corps operations. As a result, the MV-22B Osprey stands out as the correct answer in this context, given its role and capabilities in supporting amphibious operations.