What is an example of a natural water hazard?

The correct answer, slippery rocks, represents a natural water hazard because they are commonly found near bodies of water and can pose significant risks to individuals engaging in activities such as swimming, fishing, or boating. These rocks can be made slick by algae, moss, or wet conditions, making them hazardous for anyone attempting to navigate the area. The combination of water and uneven surfaces contributes to the potential for slips, falls, and injuries.

In contrast, swimmers and lifeguards do not constitute natural water hazards. Swimmers are individuals utilizing the water safely, while lifeguards are trained professionals responsible for maintaining safety and preventing incidents. Sunken boats, while they can be hazardous and create obstacles in water, are man-made objects rather than natural hazards. Therefore, slippery rocks best exemplify the dangers that arise from natural features of the environment in aquatic settings.