The right option is; A) fats
Fats are the most highly concentrated source of energy in the body.
Fats are macronutrients that are the most highly concentrated source of energy in the body. Fats are essential diets and its molecules are usually composed of carbon and hydrogen atoms. One gram of fat provides 9 calories of energy which is about two times of what can be found in one gram of carbohydrates or protein (both provide 4calories per gram). Examples of fats include cholesterol, phospholipids and triglycerides and they can be found in foods such as chicken cheese, beef and milk.
