Which of the following actions is crucial for a lifeguard during their shift?

Constantly scanning the water is essential for a lifeguard during their shift because it allows them to monitor the safety of all individuals using the beach or pool facilities. This proactive vigilance helps in identifying potential hazards, such as swimmers in distress, hazardous conditions, or the presence of dangerous marine life. Lifeguards must maintain a focused and attentive demeanor to ensure they can respond swiftly to emergencies. Regular scanning contributes to a safe environment and can significantly reduce the risk of accidents or drownings, as lifeguards are trained to spot signs of trouble early and take appropriate action. Staying engaged with the water ensures that lifeguards can perform their duty effectively and contribute to the safety of all patrons.