Which of the following is an example of a monosaccharide?

A monosaccharide is the simplest form of carbohydrates, consisting of a single sugar unit that cannot be hydrolyzed into simpler sugars. Examples of monosaccharides include glucose, fructose, and galactose.

Glucose is a primary energy source for the body and is involved in various metabolic processes. Fructose, commonly found in fruits and honey, is also a simple sugar that is metabolized differently than glucose. Galactose, found in milk and dairy products, is another monosaccharide and is part of the disaccharide lactose when combined with glucose.

In contrast, sucrose is a disaccharide; it is composed of two monosaccharides, glucose and fructose. Therefore, it does not fit the definition of a monosaccharide, which is why it is not the correct answer in this context.

The correct choice of monosaccharide can indeed be any of glucose, fructose, or galactose. However, the answer provided should specify one of these three to align accurately with the definition of monosaccharides.