Question

factors that are necessary for proper bone formation include all of the following, except
vitamin c.
the hormone thyroxine.
vitamin a.
vitamin e.
vitamin d.

Explanation:

Vitamin C is involved in collagen synthesis for bone - matrix formation. Vitamin A affects osteoblast and osteoclast activity. Vitamin D helps in calcium absorption necessary for bone mineralization. Thyroxine hormone is important for normal growth and development including bone growth. Vitamin E is an antioxidant mainly related to protecting cell membranes from oxidative damage and has no direct role in bone formation.

Answer:

D. vitamin E