The correct answer is: b) Kamrup.
Kamrup is a major poultry hub in Assam. It is the largest district in Assam in terms of population and area. The district is also home to a number of poultry farms, which produce a large number of chickens and eggs. The poultry industry in Kamrup is a major contributor to the district’s economy.
The other options are incorrect because they are not major poultry hubs in Assam. Nagaon is a district in Assam that is known for its tea production. Dhubri is a district in Assam that is known for its oil production. Jorhat is a district in Assam that is known for its education and tourism.
The poultry industry in Assam is a major contributor to the state’s economy. The industry employs a large number of people and generates a significant amount of revenue. The poultry industry is also a major source of food for the people of Assam.