The correct answer is A) Lignite.
Lignite is the lowest rank of coal, formed from peat that has been subjected to heat and pressure over millions of years. It is brown or black in color and has a high moisture content. Lignite is the most abundant type of coal in the world, and it is used primarily to generate electricity.
Bituminous coal is a higher rank of coal than lignite. It is black or dark brown in color and has a lower moisture content than lignite. Bituminous coal is used to generate electricity, produce steel, and make chemicals.
Anthracite is the highest rank of coal. It is black in color and has a very low moisture content. Anthracite is the most expensive type of coal, and it is used primarily to generate electricity.
Peat is a type of organic matter that is formed from the remains of plants that have been buried and subjected to heat and pressure over time. Peat is not a true coal, but it is sometimes referred to as “brown coal.” Peat is used to generate electricity, produce fertilizer, and make building materials.
In Karnataka, lignite is found in limited quantities in the Bellary district. The lignite deposits in Bellary are estimated to be about 1 billion tonnes. The lignite is used to generate electricity at the Bellary Thermal Power Station.