Answer:
Cardiorespiratory fitness refers to the ability of the circulatory and respiratory systems to supply oxygen to skeletal muscles during sustained physical activity.
Explanation:
I think D. Cardiovascular disease
That is a good answer, add a bit of your personal fears (don't share here) and it will be good.
Answer:
Somthing that stresses you out?
Explanation:
I don't know this for sure but, I think a stressor is a cause of stress. Like somthing that makes you nervous, unfocused, or scared. One at school might be a big test or somthing.
Sorry I couldn't give a better answer but I hope that helps! :)