Concept:In animals, excess carbohydrates are stored as glycogen, mainly in the liver and muscles.
Explanation:When glucose is available beyond immediate energy needs, the body converts it into glycogen for storage.
This stored glycogen acts as a reserve fuel that can be quickly broken down into glucose when energy is required.
Skeletal muscles hold a significant portion of the body's glycogen to support physical activity.
Let us compare the other options:
Cellulose is a structural polysaccharide found in plant cell walls, not in muscles.
Chitin forms the exoskeleton of insects and crustaceans, not a storage form in humans.
Lipids are fats used for long-term energy storage, but they are not carbohydrate stores.
Therefore, the carbohydrate stored in muscles is glycogen.
Answer:B. glycogen