Is the rusting of iron a reversible process? Why?

(B) No, the rusting of iron is not a reversible process.
Rusting is a chemical change where iron reacts with oxygen and moisture to form hydrated iron $(III)$ oxide $(Fe_2O_3 \cdot nH_2O)$.
Since the chemical composition of the substance changes permanently and cannot be easily reversed to obtain the original iron, it is classified as an irreversible process.