This stage during aerobic respiration creates the most ATP energy for the cell. O Fermentation
O Krebs cycle
O Electron transport chain
O Glycolysis

Krebs cycle

Explanation:

The Krebs cycle takes place inside the mitochondria. The Krebs cycle produces the CO2 that you breath out. This stage produces most of the energy ( 34 ATP molecules, compared to only 2 ATP for glycolysis and 2 ATP for Krebs cycle).

glycolysis is a process that fuel your metabolism. it is apart of cellular respiration the process that produce atp.