The correct answer is (a) Tlawng.
The Tlawng is the longest river in Mizoram, India. It originates in the Patkai Hills and flows through the state for about 200 kilometers before joining the Barak River in Assam. The Tlawng is a major source of water for irrigation and drinking water in Mizoram. It is also a popular destination for fishing and boating.
The Brahmaputra is the longest river in India and the third longest river in Asia. It originates in the Himalayas and flows through the states of Arunachal Pradesh, Assam, and Meghalaya. The Brahmaputra is a major source of water for irrigation and drinking water in these states. It is also a popular destination for fishing and boating.
The Ganga is the longest river in India and the longest river in the world that flows entirely in Asia. It originates in the Himalayas and flows through the states of Uttarakhand, Uttar Pradesh, Bihar, Jharkhand, and West Bengal. The Ganga is a major source of water for irrigation and drinking water in these states. It is also a popular destination for religious pilgrimage.
The Mahanadi is a river in central India. It originates in the Amarkantak hills in Madhya Pradesh and flows through the states of Chhattisgarh, Odisha, and Andhra Pradesh. The Mahanadi is a major source of water for irrigation and drinking water in these states. It is also a popular destination for fishing and boating.