Question

select the polysaccharide.

Explanation:

Polysaccharides are complex carbohydrates made up of multiple monosaccharide units linked together. The top - left structure is a single monosaccharide. The bottom - right structure is a disaccharide (two monosaccharide units). The middle structure has multiple monosaccharide units linked, characteristic of a polysaccharide.

Answer:

The middle structure (the one with multiple monosaccharide units linked together)