What is the storage form of carbohydrate within the human body?

Glycogen is the correct answer because it is the primary storage form of carbohydrates in the human body. It is a polysaccharide that is composed of long chains of glucose molecules and is primarily stored in the liver and muscles. When the body requires energy, glycogen can be quickly broken down into glucose and utilized for fuel. This storage form allows for a rapid response to energy demands during physical activities, ensuring that the body has an accessible and readily available energy source.

In contrast, glucose refers to the simple sugar that is used directly by the body's cells for energy but is not a storage form. Starch is a storage form of carbohydrate found mainly in plants, not in humans, and cellulose is a component of plant cell walls that provides structure but is not digestible by the human digestive system and does not serve as a carbohydrate storage form.