You decide to ride your bike for 30 mins, raising your heart rate to the middle of your target heart rate zone what type of activity is this an example of

The textbook distinction between aerobic andanaerobic exercise is whether or not oxygen is used to produce the energy required for the effort. Your answer will be aerobic activity because it uses oxygen for a long duration.

Aerobic, because it uses strong bursts of energy for a short duration and oxygen for a long duration.

Ithink the answer is c.  hope this is right and