Answer:
Option C and D
Explanation:
A bauxite is the most easily available ore of aluminium. It contains leached silica and several other soluble materials. Thus , it is not the purest form of aluminium.
It is the primary ore of aluminium and till today what all aluminium has been extracted is coming from bauxite.
It is found in the top soil of tropical and subtropical regions and be acquired easily through strip-mining .
Africa, Oceania and South America has the major reserve of bauxite
Hence, both option C and D are correct
It is located near the surface and can be easily strip mined
It is the most abundant aluminum
