Iron is galvanized with:

Correct answer: (a) Zinc (Zn)

Explanation

Galvanisation is coating iron or steel with a thin layer of zinc to stop rusting.

Zinc is more reactive than iron, so even where the coating is scratched, zinc corrodes first and protects the iron. This is called sacrificial protection. Galvanised iron is used for roofing sheets, buckets and water pipes.