Carbohydrates are a macronutrient that provides the body with energy. When carbohydrates are consumed, they are broken down into glucose, which is the primary source of fuel for the body`s cells. However, glucose is not the form in which carbohydrates are stored in the body.

Option 1: Glucose is the end product of carbohydrate digestion and is utilized for immediate energy production. It is not stored as a form of carbohydrate.

Option 2: Starch is a complex carbohydrate found in foods like grains and potatoes. It serves as a storage form of glucose in plants, but not in the human body.

Option 3: Glycogen is the correct answer. It is the storage form of glucose in animals, including humans. It is stored in the liver and muscles and can be rapidly converted back into glucose when the body needs energy.

Option 4: Sucrose is a type of sugar found in foods like table sugar and fruit. It is broken down into glucose and fructose during digestion and is not directly stored as a form of carbohydrate.

Therefore, option 3 (glycogen) is the correct answer as it accurately reflects how carbohydrates are stored in the body.