Functions of Vitamins

What are the principal functions of vitamins and why are they essential to life and health? In your which vitariniths are the most important and why?

Use the material in the text and lecture to support your response. Use proper APA citation.

Response Posts: In addition to your original post, be sure to provide a meaningful response to at le your peers' posts by the end of the week. In your response to your peers, you might contribute to $t$ discussion with your own original opinions or interpretation of the course materials.