Inulin is a polymer of:

Step-by-step solution

Option (3) is the answer because, inulin is a polymer of fructose. Option (1) is not the answer because, amino acids are building blocks of proteins. Option (2) is not the answer because, polymers of glucose are cellulose, starch and glycogen. Option (4) is not the answer because, glucose and galactose are monosaccharides.