Which river is called 'Loktak' and has floating islands?

oating national park, is located within Loktak Lake. Option A (“Wular Lake”) is incorrect because it does not match the river basin, lake type, location, tributary relationship, project or hydrological feature specified in the question. Option B (“Chilika Lake”) is incorrect because it does not match the river basin, lake type, location, tributary relationship, project or hydrological feature specified in the question. Option D (“Dal Lake”) is incorrect because it does not match the river basin, lake type, location, tributary relationship, project or hydrological feature specified in the question. The key concept is to match the water body with its basin, type, location and defining feature. Similar names may belong to another tributary, lake class, state or project. Therefore the correct option, index and explanation consistently identify Loktak Lake. Loktak Lake in Manipur is famous for the Phumdis - floating islands of biomass (vegetation, soil, and organic matter). It is the largest freshwater lake in Northeast India. The Keibul Lamjao National Park, the world's only floating national park, is located within Loktak Lake.