The correct answer is B) Textile industry.
Silk is a natural fiber that is produced by silkworms. Silkworms are caterpillars that feed on mulberry leaves. When the silkworm is ready to pupate, it spins a cocoon around itself. The cocoon is made of a single thread of silk that can be up to 1,500 meters long. The silk is then unraveled and used to make fabric.
Karnataka is one of the leading producers of silk in India. The state has a long history of silk production, and the industry employs a large number of people. Silk is a valuable commodity, and the production of silkworm cocoons is an important part of the textile industry in Karnataka.
The other options are incorrect because they are not related to the textile industry. Dairy is the production of milk and milk products. Leather is the skin of an animal that has been tanned and processed. Poultry is the raising of domestic birds for meat or eggs.