Answer:
C. Rickets
Step-by-step explanation:
Rickets is a disease caused by vitamin D deficiency in the body. It usually occurs in childhood, since vitamin D is essential to help absorb the amounts of calcium and phosphorus that the body needs.
Rickets manifests with stunted growth, pain and weakness in the legs and spine.
The disease can be fought by exposing the skin to sunlight so that the body synthesizes vitamin D.