The Geological Survey of India (GSI) plays a major role in:

The Geological Survey of India (GSI) is a premier national organization under the Ministry of Mines, Government of India, engaged in the survey, exploration, and research of the mineral resources of the country. It was established in 1851, making it one of the oldest geological surveys in the world.

The GSI plays a major role in the following areas:

• Mineral Exploration: The GSI is responsible for the exploration of mineral resources in India. It carries out geological mapping, geophysical surveys, and geochemical surveys to identify potential mineral deposits.
• Mineral Conservation: The GSI is also responsible for the conservation of mineral resources. It undertakes various measures to prevent the depletion of mineral resources, such as promoting the use of secondary minerals and recycling of minerals.
• Environmental Management: The GSI is also involved in environmental management. It undertakes various measures to protect the environment from the adverse effects of mining, such as land reclamation and water management.

The GSI is a highly respected organization with a long history of service to the nation. It has made significant contributions to the development of the mineral resources of India. The GSI is committed to providing high-quality services to the government and the public.

Here is a brief explanation of each option:

• Option (a): Mineral Exploration: The GSI is responsible for the exploration of mineral resources in India. It carries out geological mapping, geophysical surveys, and geochemical surveys to identify potential mineral deposits.
• Option (b): Mineral Conservation: The GSI is also responsible for the conservation of mineral resources. It undertakes various measures to prevent the depletion of mineral resources, such as promoting the use of secondary minerals and recycling of minerals.
• Option (c): Environmental Management: The GSI is also involved in environmental management. It undertakes various measures to protect the environment from the adverse effects of mining, such as land reclamation and water management.
• Option (d): All of the above: The GSI plays a major role in all of the above areas.