Concept:Highly reactive metals like aluminum are obtained by electrolysis of their purified molten ores.
Explanation:Aluminum cannot be extracted using carbon or simple chemical reduction because it is too reactive.
The purified ore is alumina,
Al2O3.
Alumina is dissolved in molten cryolite to lower its melting point and improve conductivity.
The mixture is then electrolysed in the Hall–Héroult process.
Molten aluminum forms at the cathode, while oxygen is released at the anode.
Therefore, the extraction method is electrolysis of the purified ore.
Answer:A. electrolysis of the purified ore