Galvanized iron sheets are coated with

Options

A. Copper
B. Nickel
C. Zinc
D. Carbon

Explanation

**Step-by-Step Solution:**

1. **Understanding Galvanization**:
- Galvanization is the process of applying a protective zinc coating to iron or steel to prevent rusting.
- The term "galvanized iron sheets" specifically refers to iron sheets that have been coated with zinc.

2. **Identifying the Coating Material**:
- The question asks what material galvanized iron sheets are coated with. The options provided are copper, nickel, zinc, or carbon.
- Since "galvanized" indicates a zinc coating, the answer is zinc.

3. **Reason for Coating with Zinc**:
- Iron is prone to corrosion when exposed to moisture and air, leading to the formation of rust, which is a reddish-brown layer.
- Coating iron sheets with zinc protects them from this corrosion, as zinc acts as a sacrificial anode. This means that zinc will corrode before the iron does, thus prolonging the life of the iron sheets.

4. **Conclusion**:
- Therefore, the correct answer to the question is that galvanized iron sheets are coated with zinc.

**Final Answer**: Galvanized iron sheets are coated with **zinc**.

---