When is it appropriate to remove a swimmer from the water?

Removing a swimmer from the water is appropriate when the swimmer is unresponsive or poses a danger. This situation is critical because an unresponsive swimmer may be in distress or experiencing a medical emergency, which requires immediate action to prevent further harm or potential drowning. Safety is the paramount concern for lifeguards, and assessing a swimmer's responsiveness is crucial in determining whether rescue measures should be taken.

In contrast to the other options, the presence of a large crowd or a swimmer being too far from shore does not inherently necessitate removal unless they are in immediate danger. Additionally, a swimmer enjoying themselves is not a reason for intervention unless their actions begin to threaten their safety or the safety of others. Therefore, the situation of an unresponsive individual clearly requires swift action to safeguard the well-being of the swimmer in question.