Explanation
The correct answer is:
(B) CO, HC, and NOx.
A catalytic converter is called a 3-way converter because it is primarily used to reduce the concentration of carbon monoxide (CO), hydrocarbons (HC), and nitrogen oxides (NOx) in the exhaust gases emitted by internal combustion engines. The catalytic converter contains catalysts that facilitate chemical reactions to convert these pollutants into less harmful substances, such as carbon dioxide (CO2), water (H2O), and nitrogen (N2).
