The correct answer would be A, Glucose, the molecule used as the energy source in cells.
Explanation:
Carbohydrates are one of some important and main sources of energy in the human body. Main sources of energy are Carbohydrates, Fats, Proteins and Vitamins and Minerals, etc. Carbohydrates are broken down in the body as glucose which are then converted into energy which is used by the cells of the body to take out many tasks of human body like growth, movements, reproduction, digestion, etc. Without energy, the body of living things cannot do routine task. So when body eats carbohydrates, they are broken down into glucose which is further transformed into energy and is used by the human body.
