Which of the following protocols did aim reducing emission of chlorofluorocarbons into atmosphere?

Options

A. Geneva Protocol
B. Montreal Protocol
C. Kyoto Protocol
D. Gothenburg Protocol

Answer

To determine which protocol aimed at reducing the emission of chlorofluorocarbons (CFCs) into the atmosphere, we will analyze the provided options step by step.

### Step-by-Step Solution:

1. **Identify the Protocols**: The question provides four protocols to consider: Geneva Protocol, Montreal Protocol, Kyoto Protocol, and Gothenburg Protocol.

2. **Analyze the Geneva Protocol**:
- **Date**: Signed on June 17, 1925.
- **Purpose**: It was aimed at prohibiting the use of chemical and biological weapons in warfare.
- **Conclusion**: This protocol does not target chlorofluorocarbons.

3. **Analyze the Montreal Protocol**:
- **Date**: Signed on September 16, 1987.
- **Purpose**: Specifically aimed at limiting the production and consumption of ozone-depleting substances, including chlorofluorocarbons (CFCs).
- **Conclusion**: This protocol directly addresses the reduction of CFC emissions.

4. **Analyze the Kyoto Protocol**:
- **Date**: Adopted in December 1997.
- **Purpose**: Focused on reducing greenhouse gas emissions globally, such as carbon dioxide and methane.
- **Conclusion**: While it addresses emissions, it does not specifically target chlorofluorocarbons.

5. **Analyze the Gothenburg Protocol**:
- **Purpose**: Aimed at reducing acidification, eutrophication, and ground-level ozone through emission ceilings for various pollutants.
- **Conclusion**: This protocol does not specifically focus on chlorofluorocarbons.

6. **Final Conclusion**: After analyzing all the options, the protocol that specifically aimed at reducing the emission of chlorofluorocarbons into the atmosphere is the **Montreal Protocol**.

### Answer:
The protocol that aimed at reducing the emission of chlorofluorocarbons into the atmosphere is the **Montreal Protocol**.