Answer: e. all of the above
Step-by-step explanation:
The skeletal system is the system which includes the bones and joints of the body. Each bone is a composed of the cells, minerals and proteins. The skeleton acts as a protective covering of the body which provide protection to the soft bodily tissues and organs of the body. The bone marrow is responsible for the production of the red blood cells in the body. The bones are the source of calcium. The calcium is absorbed from the food which is consumed. The skeletal system stores fat and protect it by a bony scaffold and provide protection against the injury.