The East Calcutta Wetlands are: MCQ with Answer and Explanation

Explanation:
The Mississippi River is the largest river in North America by discharge. It drains a vast area of the central United States.[reference:66]

Explanation:
The Yangtze River is the longest river in the world that flows entirely within a single country (China).

Explanation:
Loktak Lake in Manipur is the largest freshwater lake in Northeast India. It is world-famous for its 'Phumdis' (heterogeneous masses of vegetation, soil, and organic matter) and for housing the Keibul Lamjao National Park, the only floating park in the world.