Which of the following is a requirement for the servicing of fire extinguishers?

Servicing fire extinguishers requires specialized training for employees of the servicing firm to ensure that the maintenance tasks are performed correctly and safely. Fire extinguishers are critical safety devices that need to be functional in emergencies; therefore, their maintenance must adhere to strict standards. Technicians must be familiar with the various types of extinguishers, understand how to inspect and maintain them, and be knowledgeable about relevant safety regulations and codes.

Proper training ensures that these workers can effectively conduct inspections, refills, repairs, and replacements as necessary. This knowledge is crucial because improper servicing can lead to extinguishers that do not work when needed, potentially endangering lives and property. Consequently, hiring trained personnel helps to maintain compliance with safety regulations and ensures the reliability of fire protection systems.

The other choices involve assumptions that could compromise safety and compliance. For example, unlicensed individuals or those without specific training may not possess the necessary skills or knowledge to service extinguishers properly, which could lead to malfunction during an emergency.