Question

the digestive system plays an important role in providing certain minerals needed for bone growth. which mineral must be constantly provided by the digestive system, because it makes up a large portion of the bone matrix? k+ cl- ca+2 na+ i dont know yet

Explanation:

Calcium ($Ca^{2 +}$) is a major component of the bone matrix. It is constantly required by the body and is absorbed through the digestive system for bone - growth and maintenance. Other ions like potassium ($K^{+}$), chloride ($Cl^{-}$), and sodium ($Na^{+}$) have different functions in the body and are not major components of the bone matrix.

Answer:

C. $Ca^{2+}$