AIIMS 2019 Zoology Skeletal System MCQ Question

Vitamin C and D are crucial for maintaining bone density; vitamin D facilitates calcium absorption in the intestines, while vitamin C is essential for collagen synthesis, which provides structural support to bones. Option A is incorrect because, although vitamin A is important for bone health, it does not directly influence bone density like vitamin D does. Option C is incorrect as vitamin B complex does not play a significant role in bone density, and option D is not relevant since vitamin E primarily acts as an antioxidant and does not directly contribute to bone density maintenance.