Answer
b.
Work Step by Step
Lipids stored in adipose cells are the most efficient way of storing energy. Glycogen is the storage form of carbohydrates in animals; however, carbohydrates do not provide as much energy as lipids. Starch is the storage form of carbohydrates found in plants. Phosphorus does not serve any energy-storage purposes. Finally, stored lipids in adipose cells are the body's main energy reserves.
