Which Of The Following Components In The Exhaust System Helps In The Reduction Of Exhaust Emissions?

Which Of The Following Components In The Exhaust System Helps In The Reduction Of Exhaust Emissions? In general, the exhaust system includes the following components: Aftertreatment devices (catalytic converters, particulate filters) to reduce emissions of pollutants, Mufflers, which provide noise attenuation, Decoupling elements, which connect the exhaust manifold with the rest of the exhaust system.