Which of the following exercises is primarily anaerobic in nature?

Sprinting is primarily an anaerobic exercise because it involves short bursts of high-intensity effort that rely on energy sources in the muscles rather than oxygen. During sprinting, the body primarily utilizes anaerobic pathways to produce energy quickly, as the duration of the activity is very short and high intensity, typically lasting anywhere from a few seconds to around 30 seconds.

In contrast, activities like jogging and swimming usually occur at a steady pace and for longer durations, allowing the body to perform aerobic metabolism, which relies on oxygen to generate energy. Cycling can also be performed in both aerobic and anaerobic contexts, depending on the intensity and duration of the effort. However, sprinting distinctly emphasizes the short, intense effort that characterizes anaerobic exercise. This makes sprinting the correct choice when identifying an exercise that is primarily anaerobic in nature.