The is a device used to detect the nature of charge present in a body.

Options

A. Earthing
B. Orbit
C. Electroscope
D. Seismograph

Answer

To answer the question about the device used to detect the nature of charge present in a body, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Question**: The question asks for a device that can detect whether a body has a positive or negative charge.

2. **Identifying Possible Options**: The options provided in the question likely include various scientific instruments. We need to evaluate which one is specifically designed for detecting electric charge.

3. **Evaluating Options**:
- **Electroscope**: This is a device that can detect the presence of electric charge. When a charged object is brought near the electroscope, it causes the leaves of the electroscope to either diverge (if the charge is the same) or come together (if the charge is different). This indicates the nature of the charge.
- **Other Options**: The other options mentioned (like a seismograph) are not relevant to detecting electric charge. A seismograph measures seismic waves and is used for detecting earthquakes, not electric charges.

4. **Conclusion**: Based on the evaluation, the electroscope is the correct answer as it is specifically designed to detect the nature of electric charge in a body.

5. **Final Answer**: The device used to detect the nature of charge present in a body is an **electroscope**.