Vitamins dont contain calories. only fat, protein, and and carbohydrates contain calories. vitamins are chemicals that the body needs in small amounts to to support biochemical reactions.
WHY SHOULD WE EAT MORE VEGETABLES?
What is 'clean eating'?
Are artificial sweeteners better than sugar?
The answer to your question would be an average healthy adult body is made up of 60% water.
The answer is D.) all of the above