Respuesta :
I believe the answer would be aerobic reactions require oxygen and anaerobic do not. From the word, aerobic itself, it would mean that the process requires the presence of oxygen for it to happen while the opposite is called an anaerobic process.
The correct answer is option b, that is, aerobic reactions require oxygen and anaerobic do not.
Aerobic respiration refers to the procedure of generating cellular energy in the presence of oxygen. On the other hand, anaerobic respiration refers to the respiration involving electron acceptors other than molecular oxygen. It is respiration in the absence of oxygen.