The statement 'People inside a building should remain inside until the danger passes' best describes which protective action?

• A. Evacuate
• B. Lockdown
• C. Shelter in place
• D. Take shelter

Answer: (C)

Staying indoors to avoid exposure during a hazardous release is shelter in place. This protective action is used when the safest option is to keep people inside the building and limit contact with outside air until the danger passes. It involves staying inside, closing doors and windows, turning off or limiting ventilation, and moving to an interior room if possible, while listening for official instructions. Evacuating would bring people into the hazardous area, lockdown focuses on securing the building from the inside, and taking shelter is a less precise term that doesn’t convey the specific instruction to remain inside until told it’s safe.