Final answer:
Energy-yielding substances include carbohydrates, triglycerides, and proteins, which are broken down to provide energy in the form of ATP. The correct answer to the question is A. Carbs, triglycerides, protein.
Step-by-step explanation:
The energy-yielding substances include carbohydrates, triglycerides (a type of lipid), and proteins. These macronutrients are broken down during digestion into smaller molecules that can be absorbed and then used in metabolic processes to convert them to ATP, which is the energy currency for cells. Vitamins and minerals, while essential for bodily functions, do not yield energy themselves. Therefore, the correct answer is A. Carbs, triglycerides, protein. Alcohol does provide energy, but it is not a nutrient the body requires.