Rafferty Recently Completed a Fitness Assessment, Whose Results Were Poorer

Rafferty recently completed a fitness assessment, whose results were poorer than he expected. His weight is significantly higher than it should be, he has several unhealthy habits, and he is unable to lift weights comparable to others his age. Rafferty's physician suggests he undertake _________________ exercise, which will elevate his heart rate and increase his body's need for oxygen.

A) aerobic
B) anaerobic
C) cortisol
D) glycolic
E) None of these response options is correct