Final answer:
Rickets is a bone disease in children caused by vitamin D deficiency, which leads to soft, weak bones and possible skeletal deformities.
Step-by-step explanation:
The bone disease in children that results from vitamin D deficiency is called rickets. This disorder is characterized by defects in the mineralization of bones, leading to soft and weak bones, as well as potential skeletal deformities such as bowed legs. The main cause of rickets is the lack of vitamin D, which is essential for the absorption of calcium and phosphate in the intestines. Without sufficient vitamin D, children's bones can't acquire the necessary minerals to grow strong and rigid. In severe cases, children with rickets may experience bone pain and fractures.