Ganga and Brahmaputra river water dispute is between which of the following two countries.

India and Bangladesh

The correct answer is Option (3) - India and Bangladesh

The governments of India and Bangladesh have had differences over several issues including the sharing of the Ganga and Brahmaputra river waters.

The Ganga and Brahmaputra river water dispute primarily involves India and Bangladesh. These two countries share these river systems, and disagreements have arisen over water-sharing arrangements, river management, and potential environmental impacts, particularly during times of water scarcity or flooding.