The correct option is A Cellulose
Cellulose is a polysaccharide composed of glucose units linked together by beta 1,4 glycosidic linkage. It is a non-reducing sugar found in the cell wall of the plants. Cellulose is the most abundant organic compound on Earth. It is the main constituent of the plant cell wall. Its main function is to provide structural support to plants.
Proteins are made up of amino acids.
Lipids are made up of fatty acids.
Steroids are mostly lipids.