Which action should be taken if a diver signals for help?

When a diver signals for help, the proper course of action is to assess the situation and then provide assistance. This approach prioritizes safety and ensures that the rescuer is fully aware of the circumstances before taking action.

Assessing the situation allows the rescuer to determine the nature of the emergency, evaluate any potential hazards, and decide on the best method of assistance. It is crucial to remain calm and composed, as this not only helps the diver in need but also prevents escalation of panic, which can complicate the rescue.

Providing assistance without first assessing can lead to unplanned risks for both the rescuer and the distressed diver. By taking time to understand the situation, the rescuer can better gauge the necessary response, which may involve getting help from other divers or using specific rescue techniques tailored to the emergency at hand.

In contrast, ignoring the signal disregards the diver's safety and fosters a potentially dangerous situation. Reporting to the dive leader without giving immediate help may not provide timely assistance, and leaving the scene entirely can exacerbate the situation, particularly if the diver is in distress. Hence, the correct response emphasizes a combination of evaluation and readiness to assist, ensuring that help is given in the most effective and safest manner.