Rickets is caused due to the deficiency of _______ .

The correct option is D Vitamin D
Vitamins are nutrients that are required by the body in very small quantities. Vitamin D is important for healthy bones and teeth. If the body does not get sufficient amount of vitamin D, it leads to a deficiency disease called rickets in children. It results in softening and weakening of bones. To prevent it, we should consume the food items which are rich in vitamin D. Examples include, fish, egg, liver, butter, milk, etc.