Explanation:
I think body composition option a
<span>Primary care physicians are responsible for diagnosis and treatment.
- true</span>
Good Health enhances your quality of life and helps prevent disease.
The best answer for the blood vessels' valves would be these are veins that would then help in preventing the back flow of blood because the walls have small muscle to pump the blood back to the heart.Hope this is the answer.
Protective gogles, gloves and a hard hat. Hope this helps!
