The correct answer is D. Triveni canal Darbhanga.
The Eastern Kosi Canal originates in Hanuman Nagar, the Gandak Canal originates in Valmiki Nagar, and the Western Sone Canal originates in Tihri. The Triveni canal originates in Buxar, Bihar.
The Eastern Kosi Canal is a canal in India that is part of the Kosi Barrage Project. It was constructed in 1954 to provide irrigation to the districts of Darbhanga, Saharsa, and Supaul in Bihar. The canal is 180 kilometers long and has a discharge capacity of 1,000 cubic meters per second.
The Gandak Canal is a canal in India that is part of the Gandak Barrage Project. It was constructed in 1959 to provide irrigation to the districts of Gopalganj, Saran, and Muzaffarpur in Bihar. The canal is 220 kilometers long and has a discharge capacity of 1,500 cubic meters per second.
The Western Sone Canal is a canal in India that is part of the Sone Barrage Project. It was constructed in 1954 to provide irrigation to the districts of Rohtas, Kaimur, Bhojpur, and Patna in Bihar. The canal is 250 kilometers long and has a discharge capacity of 2,000 cubic meters per second.
The Triveni canal is a canal in India that is part of the Triveni Barrage Project. It was constructed in 1960 to provide irrigation to the districts of Buxar, Bhojpur, and Patna in Bihar. The canal is 150 kilometers long and has a discharge capacity of 1,000 cubic meters per second.