Final answer:
Sucrose is NOT considered to be a monosaccharide because it is a disaccharide composed of glucose and fructose.
Step-by-step explanation:
Out of the given options, sucrose is NOT considered to be a monosaccharide.
A monosaccharide is a simple sugar that cannot be further hydrolyzed into smaller carbohydrates. It is composed of a single sugar unit. In contrast, sucrose is a disaccharide made up of two monosaccharides: glucose and fructose. Therefore, sucrose does not fit the definition of a monosaccharide.