The correct answer is (b). Bauxite is the ore of aluminium. It is a rock that contains aluminium oxide, which is the main ingredient in aluminium metal. Bauxite is the most important ore of aluminium, and it is used to produce most of the world’s aluminium.
Iron ore is a rock or mineral that contains iron. It is the primary raw material used to make iron and steel. Iron ore is found in many parts of the world, but the largest deposits are in Australia, Brazil, China, and Russia.
Copper ore is a rock or mineral that contains copper. It is the primary raw material used to make copper metal. Copper ore is found in many parts of the world, but the largest deposits are in Chile, Peru, and the United States.
Gold ore is a rock or mineral that contains gold. It is the primary raw material used to make gold metal. Gold ore is found in many parts of the world, but the largest deposits are in South Africa, Australia, and China.