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Solution
The correct option is A
glycolysis--preparatory reaction--cirtric acid cycle--electron transport system
Aerobic respiration is the process of producing cellular energy involving oxygen. Cells break down food in the mitochondria in a long, multistep process that produces roughly 36 ATP. The first step in is glycolysis, the second is the citric acid cycle and the third is the electron transport system. This takes place in the cytoplasm and is common for both aerobes and the anaerobes.