Step 1: Concept
Vitamins are divided into fat-soluble (A, D, E, K) and water-soluble (B-complex, C) groups.
Step 2: Meaning
Water-soluble vitamins dissolve in water and are not significantly stored in the body.
Step 3: Analysis
Tocopherol (E), Calciferol (D), and Menadione (K) are fat-soluble. Ascorbic acid is the chemical name for Vitamin C.
Step 4: Conclusion
Ascorbic acid is a well-known water-soluble vitamin.
Final Answer: (D)