Question

Based on the information in the graph, which argument would be most effective in convincing the policymakers to maintain support of the treaties? a. Model simulations predict that stratospheric ozone concentrations are unlikely to fully recover; therefore, it is critical to maintain current bans on CFCs and other ozone-depleting substances. b. The model simulations show that statistical uncertainty about recovering ozone in the future shrinks over time, suggesting that it is important to maintain current bans on CFCs and other ozone-depleting substances. c. Although models forecast full recovery of ozone by 2060, reaching this target depends on the maintenance of existing treaties that ban CFCs and other ozone-depleting substances. d. Data on the graph show that full ozone recovery has already occurred; however, continued success relies on sustained support for bans on CFCs and other ozone-depleting substances.

Answer 1

The most convincing argument to maintain support of treaties like the Montreal Protocol is that while models predict full ozone recovery by 2060, this is contingent on the continued enforcement of the ban on CFCs and other ozone-depleting substances.

The correct option is c.

Step-by-step explanation:

Based on the information provided, the argument that would be most effective in convincing policymakers to maintain support of treaties such as the Montreal Protocol is: c. Although models forecast full recovery of ozone by 2060, reaching this target depends on the maintenance of existing treaties that ban CFCs and other ozone-depleting substances.

This argument is supported by the fact that while the ozone layer is recovering and the size of ozone holes is shrinking, there are still substantial risks and variability in ozone recovery. The argument acknowledges the success of the treaties so far but emphasizes the importance of continued vigilance due to the persistence of CFCs in the atmosphere and the possibility of illegal emissions. Furthermore, the non-negligible presence of CFC "banks" and the variability of ozone holes illustrated by the differences in size and duration between 2019 and 2020 highlight the need for ongoing adherence to the treaty obligations.

The correct option is c.