What characteristic best describes electric fencing?

Electric fencing is commonly characterized by its ability to enhance existing fencing systems. When electric fencing is attached as a single wire on top of existing fences, it serves to increase the effectiveness of the barrier without the need for a complete overhaul of the fence structure. This method is particularly advantageous for enhancing security and keeping animals contained, as it can trigger a reaction upon contact, deterring animals or intruders from crossing.

This approach also allows for flexibility and adaptability of the perimeter security without requiring extensive modification to the current fencing setup. By utilizing existing fences as a support structure, electric fencing can be implemented more efficiently while maintaining a strong deterrent presence.