What should you advise someone who suspects they have found UXO?

Advising someone who suspects they have found unexploded ordnance (UXO) to contact the proper authorities is the correct course of action because trained professionals have the expertise to safely handle and dispose of explosive materials. Engaging authorities ensures that the situation is managed following strict safety protocols, thereby minimizing the risk of injury or detonation that could occur from mishandling UXO.

The other choices present actions that could lead to dangerous consequences. Touching or attempting to inspect the item could trigger an unintended explosion, thereby putting themselves and others at risk. Keeping others away is a necessary safety precaution but should be accompanied by contacting authorities, as simply keeping a distance does not ensure proper handling of a potentially dangerous item. Notifying the media is unnecessary and could potentially complicate the situation, as the focus should remain on ensuring safety and following legal procedures established for dealing with such hazards.