Answer:
An example of anaerobic respiration is production of ethanol in yeast.
Step-by-step explanation:
Anaerobic respiration is a process of energy production in living organisms that occurs in the absence or without the requirement of oxygen.
O₂ is the ultimate acceptor of electrons in aerobic respiration, but in anaerobic respiration it is a different substance than O₂. In yeast metabolism, the final acceptor in the electron chain may be acetaldehyde, with the final result being ethanol. This process involves a type of anaerobic metabolism called fermentation, an example of anaerobic respiration.
The other options involve the participation of oxygen in a respiration process, so they are not correct.