Least useful anti-rachitic:
Ans: B, or D (Cholecalciferol or. Calcium) Ref: Nelson's Textbook of Pediatrics. 19th Edition and CRC Desk Reference for Nutrition, Second Edition, By Carolyn D. BerdanierExplanation:Sorry, I am not sure of the answer since I could not find the source or references for this question. "Nutrients that are required for normal bone growth and developement. Vitamin C. Vitamin D and minerals (Calcium, phosphorous, magnesium, manganese, pottassium . These nutrients are called Antirachitic because they prevent the development of rickets.") Ref: CRC DeskVitamin D Production
1, 25-hydroxy cholecalciferol (calcitriol)
Cholecalciferol
25-hydroxy cholecalciferol
Calcium
Vitamin D