Reserve food material of fungi is
The correct option is D Glycogen
Similar to animals, the fungi also store food material in glycogen. Similar to eukaryotic organisms, they accumulate lipids as a carbon reserve and we also have another carbon reserve called the polysaccharide glycogen.
Glycogen being a polymer have glucose molecules linked to others by glycosidic bonds forming chains.
The other form of reserve materials occur as soluble carbohydrates of low molecular weight.