The correct answer is option 4, Sericulture. Sericulture refers to the culture or breeding of silkworms. In this process, silkworms are raised specifically for the production of silk. The culture of silkworms involves carefully controlled conditions to facilitate their growth and silk production. It includes activities such as feeding the silkworms a specific diet, providing suitable temperature and humidity levels, and ensuring proper hygiene. Sericulture plays a significant role in the silk industry, as it is the foundation for the production of silk fabric. It involves not only the cultivation of silkworms but also the harvesting of silk cocoons and the extraction of silk fibers for further processing into silk fabric.