Scientists who study the anatomy of the systems in the human body focus their studies on the structure and form of an organism. Particularly, they examine the relationships among parts of the body, as well as the structure of individual organs.
For instance, the body has a skeletal system, muscles, and a circulatory system. Humans breathe, digest nourishment and reproduce, therefore, Anatomists study the individual elements that make up the different systems and organs, such as nerves, connective tissue, muscles, and skin.
The answer is A, intrinsic motivation comes from within and doesn't depend on an outside source.
I believe it's Vitamin A! hope I helped :)
I'm stuck between two anwsers which is sand/water and blocks
