Bone health nutrients and deformities

Steps:

• Identify bone deformities like rickets, caused by impaired mineralization.
• Recall calcium is essential for bone structure; deficiency weakens bones.
• Note vitamin D aids calcium absorption; its deficiency prevents proper bone formation.
• Eliminate options lacking both key nutrients for bone integrity.

Why C is correct:

• Calcium and vitamin D deficiencies both cause rickets, leading to soft, deformed bones, as vitamin D regulates calcium uptake per bone physiology.

Why the others are wrong:

• A: Iron deficiency causes anemia, not bone deformities.
• B: Iron and vitamin C deficiencies lead to anemia and scurvy (gum issues), not bone deformation.
• D: Vitamin C deficiency causes scurvy with joint pain but not primary bone deformities; vitamin D alone isn't sufficient without calcium.

Final answer: C