The correct answer is: B) Gold
Karnataka is the leading producer of gold in India. The state accounts for about 80% of the country’s gold production. The main gold mining areas in Karnataka are the Kolar Gold Fields, Hutti Gold Mines, and Ramagiri Gold Mines.
Iron ore is the second most important mineral produced in Karnataka. The state accounts for about 20% of the country’s iron ore production. The main iron ore mining areas in Karnataka are the Bellary district, Chitradurga district, and Yadagiri district.
Manganese is the third most important mineral produced in Karnataka. The state accounts for about 10% of the country’s manganese production. The main manganese mining areas in Karnataka are the Chitradurga district, Bellary district, and Raichur district.
Bauxite is the fourth most important mineral produced in Karnataka. The state accounts for about 5% of the country’s bauxite production. The main bauxite mining areas in Karnataka are the Bellary district, Chitradurga district, and Tumkur district.
In addition to these four minerals, Karnataka also produces a number of other minerals, including limestone, dolomite, gypsum, and granite.