Correct: 0 / Attempted: 0
(A) Trypsin
(B) Ascorbic acid
(C) Riboflavin
(D) Niacinamide
Answer: (A) Trypsin
Explanation: Trypsin is an enzyme involved in protein digestion, not a vitamin. Ascorbic acid (Vitamin C), riboflavin (Vitamin B2), and niacinamide (a form of Vitamin B3) are all vitamins essential for various bodily functions.