)Alex's doctor says he has great strength and flexibility, but she is worried about Alex's cardiorespiratory health. The doctor asks him to list the activities he participates in regularly. Alex lists weightlifting, karate, rollerblading, and bowling. Which activity should Alex's doctor encourage him to participate in more often to increase his cardiorespiratory health?

Weightlifting, because it is aerobic with short duration
Karate, because it is anaerobic with short duration
Rollerblading, because it is aerobic with long duration
Bowling, because it is anaerobic with long duration