Which of the following can help denote a rescue area?

Utilizing cones or markers is essential in denoting a rescue area because they provide clear visual boundaries that can be easily recognized by both rescuers and bystanders. These items can effectively indicate restricted zones, helping to manage the scene and maintain safety for all involved. They assist in directing traffic and ensuring that emergency personnel can operate without interference, while also preventing unwanted individuals from entering potentially hazardous areas.

In contrast, while flashing lights can attract attention, they do not necessarily define a specific area clearly. National flags may indicate a location associated with a country but do not serve the practical purpose of marking a rescue zone. Banners, although they can convey messages or information, are not as effective as cones or markers in establishing a defined space crucial for a safe and organized response.