They can be more productive in a working society; there's more younger generation than old; younger generation is responsible for more change overall
Answer:
central idea
Explanation:
A central idea of a passage is the main point that the passage is revolving around. The central idea is the building block and starting point for all other small ideas. The central idea is your main selling point and is the reason the passage was written.
A) "You are probably wondering how you will remember all of the rules and their exceptions."
I think it's the first one. Throughout the story we see Becky struggling with the idea that she might fail this time. Really she is making the possible outcome seem worse than it actually is (the outcome being that she could fail the test again), and Justin helps her calm down and realize that it really isn't that big of a deal if she doesn't pass.