Correct Answer: Bauxite

Solution : The correct option is Bauxite .

Bauxite is a dark reddish-coloured stone used as the primary raw material in aluminium smelting. Mined globally, it contains aluminium oxide, which is processed to extract aluminium metal. Bauxite is essential for the production of aluminium, a widely used metal in various industries due to its lightweight and corrosion-resistant properties.