Answer: d. Alcoholic fermentation
Step-by-step explanation:
The alcohol fermentation is a process in which the sugars like fructose, sucrose and glucose are transformed into alcohol and carbon dioxide by the activity of microorganisms or fungi. It is a biological process. This process takes place in the absence of oxygen. In the absence of oxygen this process is called as anaerobic process. The alcohol produced after this process is used for making beverages, bread and fuel.