In what system would the effects of a vitamin D deficiency be most readily observed?

Question

In what system would the effects of a vitamin D deficiency be most readily observed? ​

Quizplus · Accepted Answer

Vitamin D is essential for the absorption of calcium and phosphorus, which are critical components of bone health. Therefore, a deficiency in vitamin D would have the most significant impact on the skeletal system. Deficiencies in vitamin D can cause bone thinning, brittle bone and a lack of bone density that increases the risk of fractures.

In What System Would the Effects of a Vitamin D