What is the goal of the Montreal Protocol?

• A. Phase out ODS worldwide
• B. Reduce greenhouse gas emissions
• C. Ban all chemicals
• D. Improve air quality

Answer: (A)

The goal of the Montreal Protocol is to protect the ozone layer by phasing out ozone-depleting substances worldwide. It targets chemicals like CFCs, halons, and other substances that thin the ozone layer, and sets legally binding schedules for their reduction and eventual elimination. The protocol has been strengthened over time with amendments to accelerate phase-outs, and countries have dramatically cut production and use of these substances, contributing to the recovery of the ozone layer. While stopping ODS also reduces emissions of substances with high global warming potential, the primary aim is preserving the ozone layer, not general greenhouse gas reduction or broad chemical bans or overall air quality improvements.