What is the definition of micro-nutrients?

Micro-nutrients are defined as chemical elements or substances that are required in small amounts for normal growth and development. These nutrients include vitamins and minerals, which play vital roles in various bodily functions, such as supporting the immune system, promoting cell growth and repair, and aiding in the production of enzymes and hormones. While they are needed in smaller quantities than macro-nutrients such as carbohydrates, proteins, and fats, their impact on health is significant, and deficiencies in micro-nutrients can lead to various health issues. Thus, option B accurately captures this definition, emphasizing the importance of these nutrients, even in small amounts, for overall health and well-being.