The daily calorie intake for adults on the basis of macromolecules can be estimated using the food pyramid. In this, we see that the carbohydrates have the highest requirement, which is due to the fact that they provide us with energy to carry out daily activities. The next level after carbohydrates is of fruits and vegetables, and then come the proteins. Proteins are necessary for tissue repair and generation. At the top are oils and fats, to be used in limited quantities. Therefore, the best answer is B. 80% carbohydrates 20% proteins.
