What is the purpose of the "10/20" rule?

The "10/20" rule is designed to ensure a prompt and effective response to potential drowning situations. According to this guideline, lifeguards or responders should be able to recognize a drowning victim within 10 seconds of spotting a potential incident and must reach that victim within 20 seconds. This swift action is critical because drowning can occur rapidly, and the chances of survival decrease significantly with every passing second. This rule emphasizes the importance of vigilance and prompt intervention in aquatic environments, which are essential for ensuring the safety of all swimmers.

The other choices do not align with the primary safety focus of the "10/20" rule, as they relate to different practices or concepts that are not relevant to the immediate response needed in drowning situations.