Answer:
This has to do with what you got on your fitness test, it's asking in what areas you improved from the last time you took this fitness test. So for example, if I got 20 pushups, 20 situps, and 20 squats on the first try, then I got 25 pushups, 30 situps, and 35 squats on the second try, then i improved in pushups by 5, situps by 10, and squats by 15. That's what it's asking you so I can't answer that for you but I hope you understand what you gotta do. And for the second part, well you just have to state what helped you to improve. For example, let's say that in preparation for the test, I'd go mountain climbing, that would contribute to me being able to do more squats.
Hope this helps
btw, dont put this as your answer, im just explaining what you gotta do cuz I cant answer it for you