Both aerobic and anaerobic respiration yield a net gain of atp molecules to be used as energy for living things. the processes of would yield the highest number of atp.

The correct answer is oxidative phosphorylation.

Oxidative phosphorylation refers to the metabolic pathway in which cells utilize enzymes to dissociate nutrients, thus, discharging energy that is used to generate ATP. In the majority of eukaryotes, this occurs within the mitochondria.

Approximately all the aerobic species carry out the process of oxidative phosphorylation. This pathway is possibly so prevalent as it is a highly effective manner of discharging energy, in comparison to substitute fermentation procedures, like anaerobic glycolysis.