Id go with A because the avg for 15 year olds is about 72ish to 100ish.
Paying bills and having to take care of kids
Depressants slow (depress) the nervous system which slows the brain and body reactions
Positive Affirmation is the most important, because reminding yourself every day that you are talented and important can help you find a positive self-image
The answer is endocrine system because it deals with hormones around the body and is controlled by the pituitary gland.
