Which of the following is an advantage of a zone approach to patron surveillance?

• A. Both A and B
• B. Lifeguards are able to concentrate on specific areas, and there is double coverage in overlap areas
• C. Rotations help keep guards refreshed
• D. It reduces the number of lifeguards needed

Answer: (A)

Dividing the pool into zones lets lifeguards focus their attention on a defined area, making scanning more efficient and responses quicker. The zone approach also creates overlap zones where two lifeguards watch the same space, providing double coverage that increases detection reliability and helps catch incidents that might be missed by a single observer. Rotations helping to refresh guards is useful, but the strongest advantage here is the combination of focused surveillance plus redundancy in overlap areas. The idea that you can reduce the number of lifeguards is not an inherent benefit of zoning.