Answer:
Option D, polysaccharides
Explanation:
Both Cellulose and starch are polysaccharides which are made up of several polymer units.
A polysaccharide is a sugar which is made up of large number of mono or disaccharide sugar units.
In case of Cellulose, the polymer unit is monosaccharide units of glucose connected by acetal beta linkages
While in case of starch, the polymer unit is again glucose units joined by glycosidic bonds.
Hence, option D
