The correct answer is: a) Directorate of Geology and Mining, Assam.
The Directorate of Geology and Mining, Assam is a government organization that oversees the exploration and production of minerals in Assam. It is responsible for issuing licenses to mining companies, monitoring mining operations, and ensuring compliance with environmental regulations.
The Ministry of Environment, Forest and Climate Change is a central government ministry that is responsible for formulating and implementing policies related to the environment, forests, and climate change. It does not have any specific role in the exploration and production of minerals in Assam.
The Oil and Natural Gas Corporation (ONGC) is a state-owned oil and gas company that is responsible for the exploration and production of oil and gas in India. It does not have any specific role in the exploration and production of minerals in Assam.
The Geological Survey of India is a government organization that is responsible for conducting geological surveys and mapping of India. It does not have any specific role in the exploration and production of minerals in Assam.