Fitour Primary Personal Training Certification Practice Test 2026 - Free Personal Training Practice Questions and Study Guide

Water-soluble vitamins are those that dissolve in water and are typically not stored in large amounts in the body. Instead, they need to be consumed regularly in the diet. The B vitamins, which include several types such as B1 (thiamine), B2 (riboflavin), B3 (niacin), B5 (pantothenic acid), B6 (pyridoxine), B7 (biotin), B9 (folate), and B12 (cobalamin), play crucial roles in various metabolic processes, including energy production and the synthesis of red blood cells.

Vitamin C, also known as ascorbic acid, is another key water-soluble vitamin. It functions as an antioxidant, helps in collagen formation, and enhances the absorption of iron from plant-based foods.

In contrast, the other listed options refer to fat-soluble vitamins, such as A, D, E, and K, which are stored in the body's fatty tissues and liver and do not need to be consumed as frequently. This distinction makes it important for a balanced diet to include both water-soluble and fat-soluble vitamins in appropriate amounts. Hence, the group labeled with the B vitamins and C is the correct classification for water-soluble