Physiology Most active form of Vitamin D – A 7-dehydrocholesierol B 25-hydroxy-cholecalciferol C 1, 25dihydroxvcholecalciferol D 24, 25 dihydroxycholecalciferol 💡 Explanation Most active form of Vitamin D - ✓ Correct Answer: C. 1, 25dihydroxvcholecalciferol