What is the primary purpose of a catalytic converter?

The primary purpose of a catalytic converter is to convert toxic gases produced by the engine into less harmful emissions. This conversion process involves chemical reactions that take place within the catalytic converter, where pollutants such as carbon monoxide, hydrocarbons, and nitrogen oxides are transformed into carbon dioxide, nitrogen, and water vapor, which are significantly less harmful to the environment. This function is crucial in minimizing the environmental impact of vehicle emissions and ensuring compliance with regulatory standards for air quality.

While improving fuel efficiency and increasing engine power are important aspects of vehicle performance, they are not the primary function of the catalytic converter. Moreover, reducing engine noise is typically addressed through other components, such as mufflers, rather than the catalytic converter itself. Therefore, the focus of the catalytic converter is specifically on reducing harmful emissions, making the selected answer the most appropriate.