* Structural polysaccharides are complex carbohydrates that provide support and shape to organisms. They are often found in cell walls, connective tissues, and exoskeletons.

Let's break down the options:

* A) Trehalose: A disaccharide (two sugar units), not a structural polysaccharide.

* B) Glycogen: A storage polysaccharide in animals, not a structural one.

* C) Amylose: A storage polysaccharide in plants, not a structural one.

* D) Fructose: A monosaccharide (single sugar unit), not a polysaccharide.

* E) Hyaluronate: A major component of the extracellular matrix, providing structure and lubrication to tissues. This is a structural polysaccharide.

Therefore, hyaluronate is the only example of a structural polysaccharide in the list.