Question

which is a trace mineral?
o a. iron
o b. calcium
o c. sulfur
o d. chloride

Explanation:

Trace minerals are required in small amounts (less than 100 milligrams per day) in the human body. Iron is a trace mineral. Calcium and sulfur are major minerals (needed in larger amounts), and chloride is an electrolyte (also a major mineral - related ion).

Answer:

a. Iron