How is most fire extinguishers discharged?

Most fire extinguishers are discharged by following a specific sequence of actions to ensure effective operation. The correct method involves first pulling the pin to unlock the mechanism that allows the extinguisher to function. This is a safety feature designed to prevent accidental discharge. After the pin is removed, the user then presses down the lever, which releases the extinguishing agent from the nozzle.

This process is crucial because it prevents unintended activation of the extinguisher, allowing the user to be in control when faced with a fire emergency. The alternative choices do not accurately represent the proper operation of fire extinguishers, as they either suggest incorrect procedures or omit the necessary steps to safely discharge the extinguisher. Therefore, understanding this correct sequence is vital for ensuring both safety and effectiveness when using a fire extinguisher in an emergency situation.