The correct answer is option C-glycogen
Glycogen is an immediate source of energy in animals. Glycogen is formed of small sub-units called glucose monomers. The process of formation of glycogen is called glycogenesis.
Glycogen is animal equivalent to starch.
When body need energy, the stored glycogen breaks down into small monomers called glucose and provide energy to the cell.
The excessive amount of glycogen is stored in muscles and liver.