Step 1: Recall ore of aluminium.
The main ore of aluminium is Bauxite, from which alumina is extracted and then refined to aluminium.
Step 2: Eliminate distractors.
(A) Tin: Not related.
(C) Manganese: Used in steel, not aluminium.
(D) Iron: Produces steel, not aluminium.
Step 3: Conclusion.
Correct answer: (B) Bauxite.