The correct answer is A. Bauxite.
Bauxite is the most important ore of aluminium. It is an aluminum ore that is primarily composed of aluminum oxide,
but also contains iron oxide, silicon dioxide, and other impurities. Bauxite is found in tropical and subtropical regions around the world.Cryolite is a mineral that is used in the extraction of aluminum from bauxite. It is a sodium aluminum fluoride that is found in Greenland and other parts of the world.
Fluorspar is a mineral that is used
in the production of aluminum fluoride, which is used in the extraction of aluminum from bauxite. It is a calcium fluoride that is found in many parts of the world.Haematite is an iron ore that is found in many parts of the world. It is an iron oxide that is used in the production of iron and steel.
Bauxite is the most important ore of aluminium because it is the only ore that contains enough aluminum oxide to be economically feasible to extract aluminum from. Bauxite is also the only ore that is found in large enough quantities to meet the world’s demand for aluminum.