Answer:
vitamin D
Explanation:
The child is deficient in vitamin D. This is one of the main causes of bowed legs in children since vitamin D allows our bodies to keep our bones, teeth, and muscles healthy. We can get all of the vitamin D we need from the sun hitting our skin, which absorbs vitamin D. Since the child in this scenario is not allowed to play outside they have accumulated a vitamin D deficiency. Instead of drinking apple juice the child should be drinking Orange Juice which is a great vitamin D supplement.