Filament of the bulb is made of

Options

A. zinc
B. copper
C. tungsten
D. electrolyte

Explanation

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks about the material used to make the filament of a bulb.

2. **Identifying the Options**: The options provided are:
- Zinc
- Copper
- Tungsten
- Electrolyte

3. **Analyzing Each Option**:
- **Zinc**: While zinc is a metal, it is not typically used for filaments due to its lower melting point.
- **Copper**: Copper is a good conductor but has a relatively low melting point compared to tungsten, making it unsuitable for filaments.
- **Tungsten**: Tungsten has a very high melting point and excellent conductivity, making it ideal for filaments in bulbs.
- **Electrolyte**: This is not a solid material and is not used for filaments.

4. **Selecting the Correct Answer**: Based on the analysis, tungsten is the best choice due to its high melting point and good conductivity.

5. **Conclusion**: Therefore, the filament of the bulb is made of **Tungsten**.

---