Deficiency of niacin (Vitamin B3) leads to a condition characterized by dermatitis, diarrhea, and dementia, commonly known as:

Which vitamin is essential during childhood for maintaining normal vision and supporting immune function?

Scurvy occurs due to the deficiency of which of the following vitamins?

Match LIST-I with LIST-II regarding the forms of vitamins and associated conditions based on their descriptions: LIST-I (Term / Biochemical Form) A. Ergocalciferol (Vitamin D2) B. Cholecalciferol (Vitamin D3) C. Osteomalacia D. Ascorbic Acid (Vitamin C) LIST-II (Description / Source) I. A water-soluble vitamin that strengthens blood vessels and helps in the absorption of iron II. A condition in adults characterized by bone pain, weakness, and fragile bones that break easily III. A distinct form of Vitamin D that is found in plant sources IV. A distinct form of Vitamin D produced in human skin and found in animal sources Choose the correct answer from the options given below: