Which of the following scenarios illustrates an example of how environmental policies have resulted in the reversal of environmental damage?

The Montreal Protocol restricted chlorofluorocarbons (CFCs), chemicals that damage the ozone layer. As CFC levels have declined, measurements have shown signs of recovery in the Antarctic ozone hole—an example of environmental damage being reversed. The other choices describe prevention or slowing environmental harm, rather than a clear reversal of damage.

AI-written and checked against the verified answer.