The correct answer is: C. Cement.
Dalmianagar is a town in the Indian state of Bihar. It is famous for its cement industry. The town was founded in 1919 by the Dalmia family, who were pioneers in the cement industry in India. The Dalmianagar Cement Factory is one of the largest cement factories in India. It produces a variety of cement products, including ordinary Portland cement, white cement, and pozzolanic cement. The factory employs over 5,000 people and is a major source of employment in the region.
Silk is a natural fiber that is produced by silkworms. It is one of the strongest natural fibers and is used to make a variety of products, including clothing, bedding, and upholstery. Bihar is one of the major producers of silk in India. The state has a long history of silk production and there are many silk mills in the state.
Leather is a natural material that is produced from the skin of animals. It is used to make a variety of products, including shoes, bags, and furniture. Bihar is one of the major producers of leather in India. The state has a long history of leather production and there are many leather tanneries in the state.
Jute is a natural fiber that is produced from the stems of the jute plant. It is one of the strongest natural fibers and is used to make a variety of products, including bags, ropes, and carpets. Bihar is one of the major producers of jute in India. The state has a long history of jute production and there are many jute mills in the state.