Final answer:
Rickets is a childhood disorder characterized by bone deformities due to defective mineralization of bone. It is most commonly caused by a deficiency in vitamin D.
Step-by-step explanation:
Rickets is a childhood disorder characterized by bone deformities due to defective mineralization of bone. It most commonly occurs due to a deficiency in vitamin D. Vitamin D stimulates the intestinal absorption of calcium and phosphate, which are essential for proper bone development.