Which of the following are causes of hospital fires?

Smoking and hazardous materials are significant causes of hospital fires due to the specific risks involved in healthcare environments. Smoking can introduce open flames in areas where flammable materials are present, increasing the likelihood of ignition. Hospitals also utilize various hazardous materials, including certain chemicals that can be flammable or reactive under certain conditions.

These factors combine to create conditions where fire can easily start and spread, necessitating strict fire safety protocols in healthcare settings. While other options may present risks to safety and operational efficiency, they do not directly correlate with the specific fire hazards associated with smoking and the handling of hazardous materials. Therefore, understanding and addressing these risks is critical for maintaining patient safety and ensuring a secure hospital environment.