What food categories should be included in each meal?

Including a variety of food categories in each meal is essential for achieving a well-balanced diet that provides the necessary nutrients for optimal health. The correct choice encompasses a mix of vegetables, fruits, grains, dairy, and protein, which together cover a broad spectrum of essential vitamins, minerals, fiber, and macronutrients.

Vegetables and fruits are critical for their high content of vitamins, minerals, and antioxidants, which help in preventing disease and maintaining overall health. Whole grains provide dietary fiber, which aids in digestion and can contribute to a feeling of fullness, potentially helping with weight management. Dairy products contribute calcium and vitamin D, which are vital for bone health, while protein from various sources supports muscle repair and immune function. This combination ensures that meals are nutritionally comprehensive and support various bodily functions.

In contrast, the other options are limited in scope. Relying solely on protein and carbohydrates, dairy and protein, or grains and fruits would deprive the diet of certain nutrients essential for health, making it crucial to incorporate a wider range of food categories as highlighted in the correct choice.