What international agreement aimed to phase out the use of CFCs?

• A. Paris Agreement
• B. Montreal Protocol
• C. Kyoto Protocol
• D. Rio Declaration

Answer: (B)

The Montreal Protocol is an international agreement specifically created to address the depletion of the ozone layer by phasing out the production and consumption of ozone-depleting substances, particularly chlorofluorocarbons (CFCs). Established in 1987, the protocol is recognized as a significant environmental treaty that set legally binding targets for the reduction and eventual elimination of CFCs and other harmful substances. It has been widely successful, leading to a significant recovery of the ozone layer as countries adhered to its regulations and took action against the use of these substances.

Other agreements mentioned, like the Paris Agreement and Kyoto Protocol, primarily focus on climate change and greenhouse gas emissions rather than directly addressing CFCs and ozone depletion. The Rio Declaration relates to sustainable development and environmental protection principles but does not specifically target the usage of CFCs. Thus, the Montreal Protocol stands out as the definitive agreement associated with the phase-out of CFCs.