Which of the following National Parks is unique in being a swamp with floating vegetation that supports a rich biodiversity?

Keibul Lamjao National Park in Manipur is the world’s only floating national park, uniquely characterized by *phumdis*—floating masses of decomposed vegetation and soil that support the endangered Sangai (brow-antlered deer). While Keoladeo Ghana National Park is a famous wetland, it is a man-made habitat primarily known for migratory birds rather than floating vegetation. This question tests the core concept of unique ecological features and flagship species associated with India’s protected areas.