B. A food pyramid makes suggestions on what food groups should be included in a healthy diet and what percentage of the diet each group should make up.
Explanation:
The key word here is food groups. As opposed to C, a food pyramid does not mention exactly what food to eat each day, nor how much they can consume. A food pyramid solely suggests what food groups should be included in a healthy and sustainable diet, and how much of each food group to eat. The top of the pyramid is the smallest amount, and is composed of fats, oils, sugars, and sweet foods, while the bottom of the pyramid is typically composed of carbohydrates, which you should eat the most of.
