Correct Answer:

Glucose

Solution : The correct option is glucose.

Glucose is the main sugar found in the blood. It is the body's main source of energy and is used by cells throughout the body. Glucose is also important for the brain, which cannot store energy and relies on a constant supply of glucose to function. Glucose is absorbed into the bloodstream from the small intestine after eating. The amount of glucose in the blood is regulated by a hormone called insulin. Insulin is produced by the pancreas and helps to move glucose into the cells.