Which two major threats to sportsmen on or around water are identified?

The correct choice highlights drowning and hypothermia as two major threats to sportsmen on or around water. Drowning is a significant risk associated with any water activity; it can occur quickly and often unexpectedly, making it paramount for those involved in sports on or near water to be aware of safety measures and personal flotation devices.

Hypothermia also presents a serious risk, particularly in cooler water conditions or during colder weather. Even if a person is not in immediate danger of drowning, prolonged exposure to cold water can lead to a drop in body temperature, resulting in hypothermia. This condition can impair coordination and judgment, further increasing the risk of drowning.

While other options mention conditions such as dehydration, heat stroke, and falls, the selected answer specifically addresses the most immediate threats directly linked to water activities, emphasizing the importance of awareness and preparedness for those engaging in such sports.