A. Vitamin A
B. Vitamin B12
C. Vitamin C
D. Vitamin D
Answer: Vitamin C
A. Vitamin A
B. Vitamin B12
C. Vitamin C
D. Vitamin D
Answer: Vitamin C
Additional Information: Vitamin C is required for the hydroxylation of proline and lysine residues in collagen, a process essential for collagen synthesis.
Subjects: Biochemistry, Biology