Polysaccharides are complex carbohydrates formed by the polymerization of many monosaccharide units linked by glycosidic bonds. Starch is a polysaccharide composed of glucose units, serving as the primary energy storage carbohydrate in plants. Glycogen (Option C) is also a polysaccharide (animal storage form), making the question potentially ambiguous in a single-choice format as both B and C are correct. However, assuming a single correct option was intended from the source list A, B, C, D, and without further context, B is selected.