Deficiency of Vitamin D leads to _______ in children.

The correct answer is Rickets. Rickets is a condition that affects bone development in children, leading to soft and weak bones. It is primarily caused by a prolonged deficiency of Vitamin D, which is essential for the body to absorb calcium and phosphate from the diet.

• Scurvy is caused by a deficiency of Vitamin C.
• Bleeding diathesis is a general term for a tendency to bleed easily, not specifically linked to Vitamin D deficiency.
• Osteoporosis is a condition characterized by brittle and fragile bones, more commonly seen in adults, though long-term Vitamin D deficiency can contribute to it. Rickets is the specific term for children.