Montreal Protocol is associated with

Options

A. control of emission of ozone depleting substances
B. control of radioactive wastes
C. control of desertification
D. protection and management of forsets.

Explanation

**Step-by-Step Solution:**

1. **Understand the Montreal Protocol**: The Montreal Protocol is an international treaty that was established to address the issue of ozone depletion. It recognizes the harmful effects of substances that deplete the ozone layer.

2. **Identify the Purpose of the Protocol**: The primary aim of the Montreal Protocol is to control and reduce the emissions of ozone-depleting substances (ODS). These substances include chlorofluorocarbons (CFCs) and other chemicals that contribute to the thinning of the ozone layer.

3. **Historical Context**: The Montreal Protocol was signed in 1987 in Montreal, Canada, and it became effective in 1989. This historical context is important as it highlights the international effort to combat ozone depletion.

4. **Evaluate the Options**: The question provides four options:
- A) Control of emission of ozone-depleting substances
- B) Control of radioactive waste
- C) Control of desertification
- D) Protection and management of forests

5. **Select the Correct Answer**: Based on the understanding that the Montreal Protocol specifically addresses ozone depletion, the correct answer is:
- **Option A: Control of emission of ozone-depleting substances**.