Which of the following is a sign of distress in a swimmer?

A swimmer in distress often exhibits specific behaviors that indicate they are struggling and may require assistance. Waving hands is a common signal of distress; it is a way for the swimmer to attract attention and communicate that they are having trouble. This action typically indicates that the swimmer is unable to keep swimming effectively, either due to physical exhaustion, panic, or other issues.

In contrast, calmly swimming, floating on their back, or swimming with a friend generally suggest that the swimmer is relaxed and not in immediate danger. These behaviors do not indicate distress and are more associated with safe, controlled swimming conditions. Recognizing the difference between these signs is crucial for ensuring safety in the water and providing timely help when it is needed.