Which action indicates that a lifeguard is using an effective scanning technique?

The effective scanning technique used by lifeguards is best demonstrated by moving their head and eyes and looking directly at each patron in their designated zone. This method allows lifeguards to maintain a clear line of sight across the entire area they are responsible for monitoring, ensuring that they can notice any signs of distress or emergencies promptly.

Active scanning involves not just looking, but actively observing and assessing the behaviors of patrons, which is crucial for identifying individuals who may need assistance or are engaging in unsafe activities. By focusing on each patron individually, lifeguards are better able to detect subtle changes in behavior that could indicate a problem, ensuring a quicker response if needed.

In contrast, standing still and merely watching does not allow for comprehensive coverage of the area. Using binoculars could compromise situational awareness and limit the lifeguard's peripheral vision. While talking to coworkers might be a necessary part of communication, it can distract from the lifeguarding duties and detracts from the attention needed to effectively monitor the safety of the patrons.