Water-Soluble Vitamin Identification

Vitamins are classified based on their solubility in water or fat. Understanding this distinction is key to identifying different vitamins.

• Water-Soluble Vitamins: These dissolve in water. The body doesn't store them significantly, and excess amounts are typically excreted. Examples include Vitamin C and the B vitamins.
• Fat-Soluble Vitamins: These dissolve in fat. They can be stored in the body's fatty tissues and the liver for later use. Examples include Vitamins A, D, E, and K.

Classifying the Given Vitamins

Let's classify the vitamins provided in the options:

From the table, Vitamin $B_{1}$ is identified as the water-soluble vitamin.