The answer is letter C. grain

This Is a Certified Answer

Certified answers contain reliable, trustworthy information vouched for by a hand-picked team of experts. Brainly has millions of high quality answers, all of them carefully moderated by our most trusted community members, but certified answers are the finest of the finest.
The answer is C). grains.
The reason why is because grains contain energy vitamins like fibers which are filled with energy levels and gives satisfaction. But don't get it confused with "bad" carbs that have no vitamin/nutrition  value like sweet foods like cakes, cupcakes, pies etc. They are bad.