Final answer:
Plyometric exercises are the most demanding on explosive power, as they involve high-intensity and explosive muscular contractions to improve strength and power, contrasting with cardiovascular and flexibility exercises which do not target explosive power.
Step-by-step explanation:
The modality/exercise combination that provides the most demands on explosive power is A. Plyometric exercises. Plyometric exercises are designed to increase power through high-intensity, explosive muscular contractions. These exercises improve the function of the nervous system and increase the power of muscles by capitalizing on the stretch-shortening cycle of muscle fibers. Examples of plyometric exercises include jump squats, box jumps, and plyometric push-ups.
On the other hand, Cardiovascular exercises, such as cycling, walking, and running, focus on increasing muscular endurance and cardiovascular health. Static stretching and Yoga fall under flexibility exercises, which aim to improve the range of motion of muscles and joints, and though they provide health benefits like reducing injury risk, they do not specifically target explosive power.