What is the minimum distance preparation areas for display fireworks must be secured from public access?

The correct choice indicates that the minimum distance for securing preparation areas for display fireworks from public access is 100 feet. NFPA 1123 outlines safety measures to protect both the public and those involved in the operation of fireworks displays. This specific distance is crucial because it helps to mitigate risks associated with the preparation and loading of fireworks, where potential hazards exist.

Maintaining a distance of 100 feet ensures that the public is sufficiently away from any accidental ignition or mishap during the preparation phase, thus enhancing safety for spectators and operators alike. This distance is consistent with established safety practices recognized in the industry and helps enforce a controlled environment surrounding fireworks preparation activities.