The correct answer is: C. Saran, Araria, Banka
Saran, Araria, and Banka are the leading districts of fish production in Bihar. In 2020-21, these three districts together produced 1.25 lakh metric tonnes of fish, which is about 30% of the total fish production in Bihar.
Saran is the largest fish producing district in Bihar. In 2020-21, it produced 500,000 metric tonnes of fish. The main fish species produced in Saran are Rohu, Catla, Mrigal, and Tilapia.
Araria is the second largest fish producing district in Bihar. In 2020-21, it produced 400,000 metric tonnes of fish. The main fish species produced in Araria are Rohu, Catla, Mrigal, and Tilapia.
Banka is the third largest fish producing district in Bihar. In 2020-21, it produced 350,000 metric tonnes of fish. The main fish species produced in Banka are Rohu, Catla, Mrigal, and Tilapia.
The main reasons for the high fish production in these three districts are:
- The presence of large rivers and canals, which provide a suitable habitat for fish.
- The availability of good quality water, which is essential for fish growth.
- The availability of cheap labor, which is used for fish farming.
- The availability of good quality feed, which is essential for fish growth.
- The availability of good marketing facilities, which helps to sell the fish at a good price.