Final answer:
Glucose is a monosaccharide that is commonly found in the body and is used for energy by cells.
Step-by-step explanation:
A monosaccharide is a simple sugar and a monomer of carbohydrates. Glucose is a monosaccharide that is commonly found in the body and is used for energy by cells. Fructose is another monosaccharide that is found in fruits. Both glucose and fructose have the same chemical formula as sucrose, a disaccharide made up of glucose and fructose molecules bonded together. Therefore, the correct answer to the question is Glucose.