Answer:
D.) Works with bones to transfer vital elements through the body.
Yes, exercise or any physical activity will help your mental health and stress your welcome ;)
Risk Factors You Cannot Control:
1) Age
2) Gender
3) Family History
4) Accessibility to doctors (not having enough money, not having doctors, etc)
5) Being born with bad health (having asthma, weak immune system, etc)
Risk Factors You Can Control:
1) Use of smoking, alcohol, and drugs
2) Obesity
3) Inactivity
4) High Blood Pressure
5) High Cholesterol
I believe the answer you're looking for is A. Hope this helps!
The answer to your question is D.