Look at the equation.
Fe2O3+2Al⟶Al2O3+2Fe \text{Fe}_2\text{O}_3 + 2\text{Al} \longrightarrow \text{Al}_2\text{O}_3 + 2\text{Fe} Fe2O3+2Al⟶Al2O3+2FeWhich substance is reduced in this reaction?
Al\text{Al}Al
Fe2O3\text{Fe}_2\text{O}_3Fe2O3
Al2O3\text{Al}_2\text{O}_3Al2O3
Fe\text{Fe}Fe