Severe deficiency of Vitamin D results in:

A severe deficiency of Vitamin D primarily results in Rickets in children. Rickets is a condition characterized by soft, weak bones, bone pain, and impaired growth, caused by the body's inability to properly absorb calcium and phosphate, which Vitamin D facilitates.

• Scurvy is caused by a deficiency of Vitamin C.
• Night blindness is typically associated with Vitamin A deficiency.
• While Osteoporosis involves bone density loss, it is primarily an adult condition, and severe Vitamin D deficiency in adults leads to osteomalacia, which is distinct from childhood rickets.

Understanding the specific health consequences of vitamin deficiencies is crucial for health and nutrition knowledge.