I don't understand this question can someone help me answer it?

Your answer is C) Mitochondrion. The mitochondrion is the powerhouse of the cell, meaning that all the energy (ATP) being used by the cell is created inside.

image result for how many calories of energy will 20 grams of carbohydrates provide in one gram provides 4 calories

consuming the right balance of protein, carbohydrates and fat can you maintain a healthy weight and optimize your energy levels. protein and carbohydrates both contain 4 calories per gram, while fat provides 9 calories per gram.