LEED Green Associate

Answer - B - Confined spaces without adequate ventilation are a common cause of poisoning by carbon monoxide, which is extremely toxic to humans. CO, which is colorless, odorless, and tasteless, is produced by incomplete combustion when there is not enough oxygen to make CO2, such as while operating a gas stove in an enclosed space or from furnaces, water heaters, fireplaces, and generators. Besides ensuring proper ventilation and air circulation, CO monitor should be installed, especially in basements, interior rooms, kitchens, and utility areas.