The correct answer is: d) Uranium.
Uranium is a radioactive metal that is found in nature. It is used to generate electricity in nuclear power plants. The Karbi Anglong region is located in the state of Assam in India. It is a mountainous region with a rich biodiversity. The region is also home to a number of mineral deposits, including uranium.
Iron ore is a mineral that is used to make steel. It is found in rocks and minerals all over the world. Limestone is a sedimentary rock that is made up of the remains of marine organisms. It is used to make cement, lime, and other building materials. Mica is a mineral that is used to make electrical insulation and other products.
The Karbi Anglong region is a significant source of uranium in India. The region is home to the North Cachar Hills uranium mine, which is one of the largest uranium mines in the country. The mine is operated by the Uranium Corporation of India Limited (UCIL).
Uranium mining in the Karbi Anglong region has been controversial. Environmentalists have raised concerns about the impact of mining on the environment and the health of the people who live in the region. The UCIL has taken steps to address these concerns, but the controversy continues.
Despite the controversy, uranium mining is an important economic activity in the Karbi Anglong region. The mine provides jobs and income for many people in the region. The UCIL also contributes to the development of the region through its social and economic programs.