Remotesensing satellite of India visits any location on the earth at the interval of...... days.

Options

A. 18
B. 19
C. 20
D. 21

Explanation

**Step-by-Step Solution:**

1. **Understanding Remote Sensing Satellites**: Remote sensing satellites are used to observe and collect data about the Earth's surface without being in direct contact with it. They utilize electromagnetic waves to capture information.

2. **Functionality of Remote Sensing Satellites**: These satellites orbit the Earth and can monitor various locations. They gather data related to the atmosphere, oceans, land, and other activities.

3. **Frequency of Visits**: The question asks how often a remote sensing satellite of India visits any location on Earth. The information provided indicates that these satellites have a specific revisit time.

4. **Identifying the Interval**: According to the information, the remote sensing satellite visits any location on Earth at an interval of **21 days**. This means that if the satellite passes over a specific location, it will return to that same location after 21 days.

5. **Conclusion**: Therefore, the answer to the question is that the remote sensing satellite of India visits any location on Earth at an interval of **21 days**.

**Final Answer**: 21 days

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