4902MedicalMedium
In humans and other primates as well as in guinea pigs, this vitamin cannot be synthesized because of the absence of the enzyme L-gulonolactone oxidase: the vitamin is________?
ANicotinic acid
BFolic acid
CAscorbic acid
DPantothenic acid
Correct answer
C. Ascorbic acid
Explanation
The correct answer is Ascorbic acid.