HELPP PLZZ!! What are the main functions of the human skeletal system?
Question 21 options:

To support the body, protect the organs, produce blood cells, and store calcium

To regulate the composition of body fluids by removing metabolic wastes and retaining a balance of water, salt, and other nutrients

To regulate and maintain bodily functions by producing hormones and releasing them into the bloodstream

To enable the diffusion of oxygen into the bloodstream and the removal of carbon dioxide from the bloodstream