The correct answer is: D. Bhagalpur
Bhagalpur is a city and a municipal corporation in the Indian state of Bihar. It is the headquarters of Bhagalpur district and Bhagalpur division. The city is located on the banks of the Ganges River, about 200 kilometers (120 mi) north of Patna, the state capital.
Bhagalpur is a major industrial city, with a number of factories producing jute, textiles, and other goods. The city is also home to a number of educational institutions, including the University of Bhagalpur.
Madhepura, Khagaria, and Kishanganj are all districts in Bihar, but they are not major industrial centers. Madhepura is known for its rice production, Khagaria is known for its sugarcane production, and Kishanganj is known for its border trade with Bangladesh.
Jute is a type of fiber that is used to make a variety of products, including burlap, twine, and carpet. Jute is grown in tropical and subtropical regions, and India is the world’s largest producer of jute. The jute industry is an important part of the economy of Bhagalpur and other districts in Bihar.