CompTIA Security+ Exam Prep

Answer: B - The method that is bad for many types of life is CO₂. Co₂ is good for putting out fires, but bad for many types of life forms. If an organization uses CO₂, the suppression-releasing device should have a delay mechanism within it that makes sure the agent does not start applying CO₂ to the area until after an audible alarm has sounded and people have been given time to evacuate. CO₂ is a colorless, odorless substance that is potentially lethal because it removes oxygen from the air. Gas masks do not provide protection against CO₂; therefore, it is best used in unattended facilities and areas.