1. What are nutritional components?
They are nutrients required in the diet that are essential for maintaining health.
Explication
Nutritional components refer to the nutrients required in the diet, including macronutrients and micronutrients, which are essential for maintaining health and supporting bodily functions. The correct answer accurately describes this concept, while the other options refer to specific foods, supplements, or diet types, which are not the definition of 'nutritional components'.