Answer:
something that harms you or others like smoking for example
Explanation:
The muscular system is an organ system consisting of skeletal, smooth and cardiac muscles. It permits movement of the body, maintains posture, and circulates blood throughout the body.
B is the best answer since public health policies reduce probabilities of diseases. It is not an obligation to provide vaccination since these are costly but these will be made readily available as much as needed and can be provided.