What does the long whistle signal?

• A. Clear the pool.
• B. Stop Dispatch.
• C. Send Rider.
• D. Inform supervisor.

Answer: (A)

In lifeguard signaling, a long whistle is used to clear the pool. It tells everyone in the water to exit and move to the pool deck so lifeguards can assess a potential hazard or handle an emergency. The longer blast carries urgency and is audible across the pool area, making the instruction clear and immediate rather than just a casual stop. The other actions listed (changing dispatch, sending a rider, or informing a supervisor) are typically handled through radios or verbal commands to staff, not by a whistle directing swimmers.