Final answer:
Some vitamins, in addition to containing carbon, hydrogen, and oxygen, also contain nitrogen. Nitrogen is part of many vitamins' chemical structures, particularly the B vitamins and vitamin K. Carbohydrates, by definition, contain carbon, hydrogen, and oxygen.
Step-by-step explanation:
In addition to carbon, hydrogen, and oxygen, some vitamins also contain nitrogen. This is because vitamins are organic compounds and many of them, including the B vitamins and vitamin K, have nitrogen in their chemical structure. Vitamins may also contain other elements such as sulfur, but the correct answer to the question is nitrogen. Organisms also require micronutrients, which include not only nitrogen but also elements like iron, zinc, and copper, in trace amounts. These micronutrients are essential for various biological processes. By definition, carbohydrates contain carbon, hydrogen, and oxygen. These are the major elements found in carbohydrates and are crucial for their chemical structure and function.