[Expert Solution]: Vitamin D deficiency can often be found as…

Vitamin D deficiency can often be found as a single nutrient deficiency, that is, in an otherwise well-nourished person. The main reason this can happen is because: a. Most vitamin D in the body does not come from food so access to food is not an important determinant of vitamin D status. b. Diets containing sufficient other nutrients to promote growth can increase the requirement of vitamin D so that it becomes limiting. c. The content of vitamin