Which of the following semiconductor has high resistivity?

Options

A. Carbon
B. Silicon
C. Mica.
D. Germanium.

Explanation

To determine which semiconductor has the highest resistivity among the given options (carbon, silicon, mica, and germanium), we can analyze the resistivity values of each material.

### Step-by-Step Solution:

1. **Identify the Materials**: The options provided are carbon, silicon, mica, and germanium. We need to determine the resistivity of each.

2. **Understand Resistivity**: Resistivity is a measure of how strongly a material opposes the flow of electric current. The higher the resistivity, the less conductive the material is.

3. **List the Resistivity Values**:
- Carbon: Generally has the lowest resistivity among the options.
- Germanium: Has a higher resistivity than carbon but lower than silicon and mica.
- Mica: Has a higher resistivity than germanium.
- Silicon: Has the highest resistivity among the listed materials.

4. **Compare the Resistivities**: Based on the resistivity values:
- Carbon < Germanium < Mica < Silicon

5. **Conclusion**: Since we are looking for the semiconductor with the highest resistivity, we find that silicon has the highest resistivity among the given options.

### Final Answer:
The semiconductor with the highest resistivity is **silicon**.