Q: Catalytic converters used on motor vehicles break down pollutants in what, yielding non-toxic compounds? Read this paragraph and choose the correct option from the provided answers: Catalytic converters are used on motor vehicles. They break down pollutants in exhaust to non-toxic compounds. For example, they change nitrogen oxides to harmless nitrogen and oxygen gases. Choices: - muffler - intake - oil - exhaust A:
The answer to this question is:
exhaust