What has happened to the manufacture of CFCs since 2000?

• A. It has been increased due to demand
• B. It has been phased out and banned
• C. It has remained unchanged
• D. It is now encouraged in many countries

Answer: (B)

Since 2000, the manufacture of chlorofluorocarbons (CFCs) has been phased out and banned due to their harmful effects on the ozone layer. The recognition of CFCs as a significant contributor to ozone depletion led to global agreements, such as the Montreal Protocol, aimed at reducing and ultimately eliminating the production and use of these substances. The Protocol established legally binding commitments for signatory countries to reduce the use of ozone-depleting substances, resulting in a systematic withdrawal of CFCs from the market. This action was driven by extensive scientific research showing the detrimental impact of CFCs on the environment, leading to widespread support for their ban internationally.

The other options reflect a misunderstanding of the regulations and environmental policies instituted globally. Starting from the late 20th century and continuing into the 21st century, there has been a concerted effort to protect the ozone layer, which fundamentally altered the landscape of CFC production.