Natasha is making a model of cellular respiration. Her model shows the pathway followed when there is enough oxygen available. What does Natasha's model show? A an aerobic pathway consisting of glycolysis and fermentation B an anaerobic pathway consisting of glycolysis and fermentation C an aerobic pathway consisting of glycolysis, the Krebs cycle, and the electron transport chain D an anaerobic pathway consisting of glycolysis, the Krebs cycle, and the electron transport chain