What is the primary benefit of elevating extension cords above deck level?

Elevating extension cords above deck level is primarily beneficial for minimizing trip hazards. When extension cords are placed on the ground, they can easily be overlooked by individuals walking around the pool area, increasing the risk of tripping and potentially causing injuries. By raising the cords, they are less likely to be in the pathway of users, promoting a safer environment around the pool.

The other options are relevant considerations but do not directly relate to the primary purpose of elevating extension cords. For instance, while preventing water displacement could be a concern in specific scenarios, it is not the main focus of positioning cords. Similarly, avoiding chemical reactions pertains more to the storage and handling of chemicals rather than the management of extension cords. Lastly, preventing algae growth is unrelated to the placement of extension cords, as it is primarily influenced by water chemistry and environmental conditions. Therefore, the emphasis on minimizing trip hazards makes the choice of elevating extension cords above deck level the most pertinent concern.