Answer:
d. liver and muscles
Explanation:
Glycogen is the body's rapid energy supply, which is how glucose, the main energy source of cells - derived from carbohydrate consumption - is stored. Glycogen is found mainly in muscle (muscle glycogen) and liver (liver glycogen).
Glycogen is a homopolysaccharide, which means that its molecule is composed of monomers of the same monosaccharide, in this case glucose. It is the primary carbohydrate for storing energy in animal cells; in vegetables is starch. It is the way glucose is stored in the body for future energy needs. It is found in the liver and may constitute up to 7% of the weight, liver glycogen; and in skeletal muscle, muscle glycogen.