Question 6
A shortage of which mineral salt causes rickets, weak teeth and bones, and growth deficiency?
The right answer is the one marked above.
Calcium. It is needed for the growth of teeth and bones, matters in blood clotting, helps the nerves work properly, and is a component of milk.
Calcium and vitamin D belong together here. Vitamin D controls the absorption of calcium and phosphorus, so a shortage of the vitamin produces bone problems that look much like a shortage of the mineral.