The correct answer is: None of the above.
India has the world’s largest reserves of bauxite, the ore from which aluminium is made. It also has significant reserves of iron ore, manganese, coal, lignite, chromite, nickel, lead, zinc, silver, gold, diamonds, graphite, fluorspar, barite, gypsum, limestones, sand, gravel, and clay.
Copper is the second most widely used non-ferrous metal in the world after aluminium. It is a good conductor of heat and electricity, and is used in a wide range of products, including electrical wiring, plumbing, and roofing. India has significant copper reserves, but they are not the largest in the world.
Gold is a precious metal that is used in jewellery, coins, and electronics. India is one of the world’s largest producers of gold, but it does not have the largest reserves.
Mica is a mineral that is used in a variety of products, including electrical insulation, roofing, and cosmetics. India has significant mica reserves, but they are not the largest in the world.