The correct answer is A. Motipur.
Motipur is a town and a notified area committee in East Champaran district in the Indian state of Bihar. It is a major silk producing centre in Bihar. The town is located on the banks of the Gandak River, about 220 kilometres (140 mi) north of Patna, the state capital.
The silk industry in Motipur is a major source of employment for the local people. The town is home to a number of silk reeling and weaving factories. The silk produced in Motipur is known for its high quality and is exported to a number of countries around the world.
The silk industry in Motipur has a long history. The town was once a major center of the silk trade during the Mughal Empire. The silk industry in Motipur suffered a decline during the British Raj, but it has since revived and is now one of the major industries in the town.
The silk industry in Motipur is based on the cultivation of mulberry trees. The leaves of the mulberry tree are used to feed silkworms. The silkworms produce silk cocoons, which are then used to produce silk thread. The silk thread is then used to weave silk fabrics.
The silk industry in Motipur is a major source of employment for the local people. The town is home to a number of silk reeling and weaving factories. The silk produced in Motipur is known for its high quality and is exported to a number of countries around the world.