What measure can enhance the effectiveness of a fire extinguisher?

Enhancing the effectiveness of a fire extinguisher is largely about ensuring that it is readily available when needed. Accessibility means that the fire extinguisher is easy to reach, visible, and unobstructed. In an emergency situation, being able to quickly locate and operate an extinguisher can make a significant difference in controlling or extinguishing a fire before it escalates.

Factors such as high cost may not directly contribute to a fire extinguisher's effectiveness in an emergency, as the monetary aspect does not influence its operational capability. Manual handling refers to how the extinguisher is used, which is important but doesn't directly improve its effectiveness in terms of availability or readiness. Frequent usage could be beneficial for training purposes, but using an extinguisher frequently outside of an emergency situation could result in depletion or damage to the unit, making it less effective when really needed. Thus, ensuring that fire extinguishers are accessible is a key measure in enhancing their practical effectiveness during a fire emergency.