Copper is the only essential component of the human diet from the provided options. It is vital for processes like red blood cell formation and immune system function. The other elements listed are not necessary and may even be harmful.
;
Copper is the only essential component from the listed options that is vital for human health, playing a significant role in various bodily functions. The other elements are not necessary for our diet, and some can even be harmful. Essential nutrients like copper are important for processes such as iron metabolism and immune function. ;