Concept:A balanced diet gives the body all the essential nutrients in the right proportions.
Explanation:The sentence describes a diet that contains the necessary nutrients for good health.
Among the options, “balanced” is the word that best matches this idea.
A balanced diet includes proteins, carbohydrates, vitamins, minerals, and other nutrients in proper amounts.
“Complete,” “mixed,” and “delicious” do not express the idea of correct nutrient proportions.
Answer:A. balanced