Match each nutrient with the correct calories it provides per gram.

The proper matching of nutrients with their caloric values per gram is essential for understanding how they contribute to energy intake. Carbohydrates provide 4 calories per gram, which is consistently recognized in nutritional science. Protein also provides 4 calories per gram, making them equal in energy contribution. Fat, on the other hand, is more energy-dense and provides 9 calories per gram. Alcohol contributes 7 calories per gram, which is an important factor in understanding energy intake from beverages.

The choice that accurately reflects these values correctly aligns carbohydrates and proteins to 4 calories each, fats to 9 calories, and alcohol to 7 calories. This understanding is crucial for anyone studying nutrition, as it helps in estimating the energy contributions of different macronutrients in dietary planning.