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. The park is famous for the endangered Sangai deer, which is also known as the brow antlered deer. The Sangai deer is a small deer with long, spiral antlers. It is found only in the Manipur grasslands and is the state animal of Manipur. The Sangai deer is an endangered species and is threatened by habitat loss and hunting.
The other options are incorrect. The one-horned rhinoceros is found in the Kaziranga National Park in Assam, India. The clouded leopard is found in the forests of Southeast Asia. The hoolock gibbon is found in the forests of India, Bangladesh, and Myanmar.
The Sangai deer is a beautiful and graceful animal. It is a symbol of the state of Manipur and is an important part of the local culture. The Sangai deer is also a popular tourist attraction. The Keibul Lamjao National Park is a great place to see the Sangai deer in its natural habitat.