The correct option is D Cellulose
Cellulose is most abundant in nature. Cellulose, a complex carbohydrate or polysaccharide consisting of 3,000 or more glucose units. Being the basic structural component of plant cell walls, cellulose comprises about 33 percent of all vegetable matter (90 percent of cotton and 50 percent of wood are cellulose) and is the most abundant of all naturally occurring organic compounds.