Which safety practice is essential when using a fire extinguisher?

Remaining at a safe distance and aiming at the base of the flames when using a fire extinguisher is essential for effective fire suppression and personal safety. Aiming at the base of the flames is crucial because that is where the fuel source is located. By targeting the base, the extinguisher can directly interrupt the combustion process and effectively extinguish the fire.

Additionally, standing at a safe distance allows the user to avoid heat and smoke, which can pose risks to their safety. Proximity to a fire can lead to burns or inhalation of harmful smoke and gases, so it's there that the proper use of a fire extinguisher, combined with maintaining a safe distance, ensures both effectiveness and safety during the operation. This practice aligns with fire safety training, which emphasizes the importance of a strategic approach in fire control situations.