Protective layer of ozone in the atmosphere exists in which layer

Options

A. Troposphere
B. Ionosphere
C. Stratosphere
D. Atmosphere

Explanation

### Step-by-Step Solution:

1. **Understanding the Question**: The question asks about the layer of the atmosphere where the protective layer of ozone exists.

2. **Identifying Atmospheric Layers**: The atmosphere is divided into several layers, including the Troposphere, Stratosphere, Mesosphere, Thermosphere, and Exosphere.

3. **Focusing on Ozone**: The ozone layer is known for its role in absorbing the majority of the sun's harmful ultraviolet (UV) radiation.

4. **Locating the Ozone Layer**: The ozone layer is primarily found in the Stratosphere, which is the second layer of the atmosphere, situated above the Troposphere and below the Mesosphere.

5. **Conclusion**: Therefore, the protective layer of ozone exists in the Stratosphere.

6. **Final Answer**: The correct answer is **Stratosphere**.