Shelter in place protection most accurately means people should:

• A. having people remain inside a building.
• B. moving everyone from a threatened area to a safer area.
• C. keeping everyone not directly involved in the emergency operation away from the affected area.
• D. allowing only first responders into the affected area.

Answer: (A)

Shelter in place means protecting people by staying inside a building rather than trying to evacuate through potentially contaminated air. The goal is to keep you out of the outside environment when a hazardous release or outdoor threat is present, so the safest action is to remain indoors, ideally in a central interior room, with doors and windows closed and the building’s ventilation minimized if instructed to do so. This reduces exposure to any harmful smoke, gas, or chemical plumes until authorities tell you it’s safe to leave or provide further guidance. The other options describe evacuation, limiting access, or restricting who can enter the area, but they don’t describe the protective action of staying inside to shield yourself from outdoor hazards.