How do aerobic and anaerobic respiration compare? a. both aerobic and anaerobic respiration are very efficient and produce a large amount of energy. b. neither anaerobic nor aerobic respiration is very efficient or produces a large amount of energy. c. anaerobic respiration is very efficient and produces a large amount of energy, while aerobic respiration is not very efficient and produces a small amount of energy. d. aerobic respiration is very efficient and produces a large amount of energy, while anaerobic respiration is not very efficient and produces a small amount of energy.