Final answer:
Glycogen is not a product of fermentation; this biological process produces lactate, ethanol, CO2, and NAD+, depending on the type of fermentation, while glycogen is a storage form of glucose.
Step-by-step explanation:
The product of fermentation that is not listed in the choices provided is glycogen. Fermentation is an anaerobic process that occurs in the absence of oxygen and results in the production of different substances depending on the type of fermentation. During lactic acid fermentation, which occurs in animal muscle cells, the end products are lactate and NAD+. Alcoholic fermentation, on the other hand, which is used in the making of bread and wine, yields ethanol, CO2, and NAD+. Glycogen, however, is not a product of fermentation; it is a form of stored glucose in humans and animals.