HMS, TIP 2014 HSC 20 MC The graph shows training thresholds for aerobic and anaerobic conditioning. Which exercise intensity indicates the greatest potential for gain in aerobic conditioning? W X Y Z Show Answers Only \(D\) Show Worked Solution D is correct: Zone Z is just below anaerobic threshold providing maximum aerobic benefit. Other Options: A is incorrect: Zone W is below aerobic threshold with minimal conditioning benefit. B is incorrect: Zone X is at aerobic threshold but not optimal intensity. C is incorrect: Zone Y provides some benefit but not maximum aerobic gain. ♦♦♦♦♦ Mean mark 13%.