What should you do if your fire extinguisher is empty while fighting a fire?

Answer: C — Use sand or dirt to cover the fire

When faced with an empty fire extinguisher while combating a fire, using sand or dirt to smother the flames can be an effective strategy. This technique works by depriving the fire of oxygen, which is essential for combustion. Sand and dirt can help contain smaller fires, especially those involving flammable materials, and can be quickly accessible in many environments. In contrast, leaving immediately could compromise safety without ensuring that the fire is under control or that help is on the way. Trying to find another extinguisher may waste valuable time during an emergency when every second counts. Waiting for help could expose you and others to greater danger if the fire continues to spread. Thus, using sand or dirt provides a proactive approach to managing the situation when other resources are unavailable.