Passage Summary: Kids think the world is doomed, which makes them stop trying to fix things. To keep them motivated, we have to make sure they believe that things actually can get better.

Conclusion: We must ensure that children believe a better future is achievable.

Reasoning: Pessimism causes a loss of motivation, which harms humanity's future, so we must prevent that loss of motivation by fostering belief in a better future.

Analysis: The argument assumes a necessary connection between believing a better future is possible and maintaining motivation. Specifically, it assumes that one cannot be motivated to work for a better future unless they believe that future is actually realizable. Look for an answer that confirms this belief is a required condition for motivation to exist.