During the past century, the temperature of earth has increased by

Options

A. `15^(@)C`
B. `33^(@)C`
C. `0.6^(@)C`
D. `1.6^(@)C`

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks about the increase in Earth's temperature over the past century. We need to identify the correct numerical value from the given options.

2. **Reviewing the Options**: The options provided are:
- A) 1.5 degree centigrade
- B) 3.3 degree centigrade
- C) 0.6 degree centigrade
- D) 1.6 degree centigrade

3. **Identifying the Cause of Temperature Increase**: The increase in Earth's temperature is primarily due to the greenhouse effect. This effect is caused by greenhouse gases, particularly carbon dioxide (CO2) and methane (CH4), which trap heat in the atmosphere.

4. **Researching Historical Data**: Historical climate data indicates that over the past century, the average global temperature has indeed risen.

5. **Finding the Correct Answer**: Based on scientific consensus and data, the average increase in temperature over the past century is approximately 0.6 degree centigrade.

6. **Conclusion**: Therefore, the correct answer to the question is C) 0.6 degree centigrade.

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