Answer: A. uses pyruvic acid
Explanation: Both aerobic and anaerobic respiration begins with glycolisis. This process oxidize glucose to produce pyruvic acid. In aerobic respiration, piruvic acid is converted in acetyl-coA, enters in Krebs cycle and then, in electron transport chain. on the other hand, in anaerobic respiration piruvic acid is converted in lactic acid, ethanol, etc through fermentation process.
