Answer:
C: The Fe is not balanced
Explanation:
The reaction expression is given as:
     Fe₂O₃  +  3H₂  →  Fe  +  3H₂O
The problem here is to find the specie that is not balanced.
                            Number of moles
Specie                Reactant                    Product
Fe                        2                         1
O Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â 3 Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â 3
H Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â 6 Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â 6 Â Â Â
So, we see that Fe is not balanced.