<prompt> Which water soluble vitamin is synthesized in our body -NiacinFolic acidCobalaminePyridoxine  <response>: Ans. is a i.e., Niacin o This question is confusing one Read text belowo Niacin Vitamin B3 is synthesized from tryptophan inside the bodo Some vitamins are also formed by bacterial activity in coloni Vitamin Kii Vitamin B12Thiamin Vitamin Bliv Riboflavin Vitamin B2v Biotin Vitamin B7o Thus, options a, b d all are correct here. But best answer among these is niacin as it is the only vitamin which is synthesized by proper anabolic metabolism. 