Ozone layer is getting depleted because of

Options

A. excessive use of automobiles
B. excessive formation of industrial units
C. excessive use of manmade compounds containing both fluorine and chlorine
D. excessive deforestation

Explanation

### Step-by-Step Solution:

1. **Understanding the Ozone Layer**:
- The ozone layer is located in the stratosphere and serves as a protective shield for the Earth, absorbing harmful ultraviolet (UV) radiation from the sun.

2. **Importance of the Ozone Layer**:
- It protects living organisms from harmful effects such as skin cancer, cataracts, and genetic mutations caused by UV rays.

3. **Identifying Causes of Depletion**:
- The depletion of the ozone layer is primarily caused by certain chemicals, particularly chlorofluorocarbons (CFCs).

4. **Sources of CFCs**:
- CFCs are released from industrial processes and common household appliances, such as refrigerators and air conditioners.

5. **Analyzing Options**:
- **Option A**: Excessive use of automobiles contributes to air pollution but is not a major cause of ozone layer depletion.
- **Option B**: Industrial units do release harmful gases, but they are not specifically responsible for ozone depletion.
- **Option C**: Excessive use of man-made compounds containing fluorine and chlorine (CFCs) is indeed a major cause of ozone layer depletion.
- **Option D**: Excessive deforestation leads to air pollution but does not significantly impact the ozone layer.

6. **Conclusion**:
- The correct answer is **Option C**, as CFCs are the primary compounds responsible for the depletion of the ozone layer.