The correct answer is: A) Manganese.
Manganese is a chemical element with the symbol Mn and atomic number 25. It is a metal that is a member of the transition metals and is chemically similar to iron and nickel. Manganese is the 12th most abundant element in the Earth’s crust and has many industrial uses, including in the production of steel, batteries, and fertilizers.
The Kudremukh region in Karnataka is a major mining area for manganese. The Kudremukh Iron Ore Company Limited (KIOCL) is a state-owned mining company that operates in the region. KIOCL produces about 3 million tonnes of manganese ore per year.
The other options are incorrect. Iron ore is a mineral that is used to make steel. Copper is a metal that is used in electrical wiring and plumbing. Gold is a precious metal that is used in jewelry and other decorative items.