Concept:Loktak Lake is a distinct geographical feature located in the northeastern state of Manipur.Explanation:Loktak Lake is the largest freshwater lake in Manipur.It is well known for its floating islands called Phumdis.The Keibul Lamjao National Park, the world's only floating national park, is situated on this lake.This park is the only natural habitat of the Sangai (the brow-antlered deer), which is the state animal of Manipur and an endangered species.Thus, the lake lies entirely within the state of Manipur.Answer:Manipur