What is the role of nutrients in the body?

Nutrients play a vital role in supporting various bodily functions, making option B the correct choice. They are fundamental to maintaining overall health and are involved in a range of processes that are essential for the body’s well-being.

Nutrients are categorized into macronutrients (such as carbohydrates, proteins, and fats) and micronutrients (like vitamins and minerals), each serving multiple purposes. For instance, carbohydrates provide energy, proteins are crucial for growth and repair of tissues, while vitamins and minerals support immune function, bone health, and various metabolic processes.

In contrast, some of the other options focus on narrower aspects of nutrients’ contributions. Providing energy is just one of the roles of nutrients, not the only one; thus, stating that they provide energy only limits their importance. Similarly, while nutrients do aid in growth, this is also only part of their function. Repair is another critical role but does not encompass all the other essential processes that nutrients support, such as regulation of metabolic processes, enzyme function, and overall homeostasis in the body.