The correct answer is: d) All of the above.
Arunachal Pradesh is a state in northeastern India. It is the largest state in India by area, but has the lowest population density. The state is rich in natural resources, including coal, limestone, graphite, and other minerals.
Coal is a fossil fuel that is formed from the remains of plants and animals that lived millions of years ago. It is a major source of energy in India, and Arunachal Pradesh has significant deposits of coal. The coal in Arunachal Pradesh is of high quality, and it is used to generate electricity and produce steel.
Limestone is a sedimentary rock that is composed of calcium carbonate. It is used in a variety of industries, including construction, cement manufacturing, and papermaking. Arunachal Pradesh has significant deposits of limestone, and it is one of the major producers of limestone in India.
Graphite is a mineral that is composed of carbon atoms. It is used in a variety of industries, including the manufacture of batteries, lubricants, and refractories. Arunachal Pradesh has significant deposits of graphite, and it is one of the major producers of graphite in India.
In addition to coal, limestone, and graphite, Arunachal Pradesh also has significant deposits of other minerals, including iron ore, bauxite, and copper. The state is a major producer of these minerals, and they are used in a variety of industries.