Final answer:
Anaerobic exercise is exemplified by activities such as a tennis serve, involving short, intense bursts of physical activity that rely on energy sources within the muscles rather than oxygen.
Step-by-step explanation:
Among the options provided, the one that describes anaerobic exercise is c. Includes activity such as a tennis serve. Anaerobic exercise is characterized by intense physical activity over a short duration, where the body's demand for oxygen exceeds the oxygen supply available. It involves using the muscles close to their maximum strength, creating an oxygen debt, and typically engages fast-twitch muscle fibers that consume a small amount of oxygen. This contrasts with aerobic exercise, which is performed at a moderate level of intensity over a longer period and relies on the presence of oxygen to meet the body's energy demands.
Examples of anaerobic exercises include sprinting, heavy weight lifting, and a tennis serve, which all require quick bursts of energy. On the other hand, aerobic exercises, like long-distance running, swimming, and cycling, utilize oxygen to generate energy for sustained activity.