Which tool was developed to pull down ceilings to access concealed spaces during fire fighting?

The tool specifically designed to pull down ceilings and access concealed spaces during firefighting is the pike pole. This tool typically consists of a long pole with a hook at the end, which allows firefighters to reach high areas, such as ceilings, to pull down materials like drywall or plaster. This action is crucial during a fire, as it helps expose hidden flames or hotspots that may not be visible. Accessing these concealed spaces is essential for effectively controlling and extinguishing the fire, as well as ensuring that there are no remaining embers that could reignite.

The other options, while useful in firefighting, do not serve this particular purpose. An axe is primarily used for chopping or creating openings, a fire hook is used for pulling objects but is less effective for pulling down ceilings specifically, and a fire extinguisher is designed to put out fires rather than access spaces. Therefore, the pike pole stands out as the specialized tool for the task of accessing concealed spaces during firefighting operations.