The correct answer is Sangai deer.
The Keibul Lamjao National Park is a national park in Manipur, India. It is the only floating national park in the world, and is known for the endangered Sangai deer. The park is located on the Loktak Lake, and is home to a variety of other wildlife, including the hog deer, the sambar deer, the wild boar, the barking deer, the wild dog, the leopard, the python, and the monitor lizard.
The Sangai deer is a small deer that is found only in Manipur. It is a shy and elusive animal, and is rarely seen by humans. The Sangai deer is a herbivore, and its diet consists of grasses, leaves, and fruits. The Sangai deer is an endangered species, and its population has declined significantly in recent years. The main threats to the Sangai deer are habitat loss, hunting, and poaching.
The Keibul Lamjao National Park is an important conservation area for the Sangai deer. The park provides a safe haven for the deer, and helps to protect it from the threats that it faces. The park is also a popular tourist destination, and helps to raise awareness of the Sangai deer and the threats that it faces.
The other options are incorrect because they are not found in the Keibul Lamjao National Park. The Hoolock gibbon is a species of gibbon that is found in the Eastern Himalayas. The clouded leopard is a species of leopard that is found in the forests of Southeast Asia. The one-horned rhinoceros is a species of rhinoceros that is found in the Indian subcontinent.