Correct option is D
The correct answer is (d) Assam.
• According to the Ministry of Petroleum and Natural Gas, Government of India (2021-2022), Assam is the largest producer of natural gas in India
• Assam accounts for about 53% of India's total natural gas production.
• The state has several natural gas fields, including the Digboi, Naharkatiya, and Rudrasagar fields.
• The production of natural gas in Assam has been increasing steadily over the years. In 2019-20, the state produced over 5,000 million cubic meters of natural gas.
• The natural gas produced in Assam is used for various purposes, including power generation, industrial use, and domestic use.