Final answer:
Most organisms perform fermentation by converting pyruvic acid to ethanol and carbon dioxide, commonly known as alcoholic fermentation, therefore the answer is A) Alcohol, Carbon dioxide.
Step-by-step explanation:
The question discusses the chemical reaction involved in fermentation where pyruvic acid is converted to another compound. The correct answer to which compounds are produced by most organisms during fermentation that converts pyruvic acid is Alcohol (ethanol) and Carbon dioxide (CO2). Therefore, the correct option is A) Alcohol, Carbon dioxide. This process, known as alcoholic fermentation, is used by yeasts and some bacteria and is prevalent in the production of bread, wine, and biofuels. During the fermentation process, firstly a carboxyl group is removed from pyruvic acid to release CO2 and form acetaldehyde, and then NADH is oxidized to NAD+, producing ethanol in the process.