What is the main purpose of vitamins?

To regulate hormone production and usage

Both A and B

To regulate body functions

To store water in the body

To regulate body functions.

The main purpose of vitamins is to regulate body functions. Vitamins are essential nutrients that the body needs in small amounts to function properly. They play a vital role in various physiological processes, such as metabolism, growth, and development. While vitamins can support hormone production and usage, their primary function is to regulate overall body functions and maintain health. Storing water in the body is not a function of vitamins but is primarily regulated by the kidneys and the body's fluid balance mechanisms.