Which international treaty is primarily associated with climate change and greenhouse gas emissions reductions?

• A. Madrid Protocol
• B. Montreal Protocol
• C. Kyoto Protocol
• D. Paris Convention

Answer: (C)

The main idea here is the establishment of legally binding emission reduction commitments aimed at cutting greenhouse gases. The Kyoto Protocol, adopted in 1997 and entering into force in 2005, set specific binding targets for developed countries to reduce their greenhouse gas emissions, introducing market-based tools like emissions trading and mechanisms such as the Clean Development Mechanism and Joint Implementation to help meet those targets. This makes it the treaty most closely associated with formal, quantified emissions reductions in its original framework. In contrast, the Montreal Protocol focuses on phasing out ozone-depleting substances, the Madrid Protocol relates to Antarctic environmental protection, and while the Paris Agreement also addresses climate change, it uses nationally determined contributions that are not binding caps in the same way Kyoto established for its parties. So the Kyoto Protocol is the treaty most linked to climate change and binding greenhouse gas reductions.