Why must fire extinguishers be routinely maintained?Select the best option.To make sure they’re up to codeSo that employees know how to use themTo make sure they remain effectiveTo keep the employees ready for fire drills

Answer: the answer would be To make sure they remain effective.Step-by-step explanation:It wouldn't be to make sure they are up to code because fire extinguishers do not use code, code is used in electronics. For the second option and the last option it would not be this because they could be trained in a practice instead of using the real thing.