Answer:
The correct answer would be A) storage medium for energy.
Food is anything an organism consumes to fulfill its nutritional requirement.
Food is broken down or digested into simpler elements which are then used to provide energy required to maintain life and growth of the organism.
Food contains macro and micro nutrients. The main macro-nutrients are carbohydrates, fats, and proteins while vitamins, minerals, and electrolytes come under the category of micro-nutrients.
Carbohydrates are the preferred source of energy however, fats and proteins (least preferred source) can also provide energy when enough glucose is not present in the body.
