Which of the following activities falls under the definition of service and servicing?

The activity of charging, filling, maintaining, and testing fire extinguishers is central to the definition of service and servicing within the fire safety industry. This process ensures that fire extinguishers are operational and compliant with safety regulations, which is essential for effective fire prevention and emergency response. Routine maintenance and testing help identify issues such as pressure loss or mechanical failures, which could compromise the extinguisher's performance in an emergency.

By focusing on the physical aspects of fire extinguishers—ensuring they are ready and capable of functioning properly—this activity directly aligns with the responsibilities involved in servicing fire safety equipment. This is crucial for maintaining safety standards and ensuring compliance with relevant laws and regulations that govern fire safety practices.

In contrast, training personnel on fire safety, designing fire prevention systems, and preparing fire reports and assessments, while important aspects of fire protection, do not specifically involve the direct maintenance or servicing of fire extinguishers themselves.