Question

catalytic converters come in two types:__and__.a. reduction; carbonizedb. oxidizing; reductionc. carbonized; optimized. complex; simple

Explanation:

Catalytic converters are devices used in vehicles to reduce harmful emissions. They work through chemical reactions. Oxidizing catalytic converters convert carbon monoxide (CO) and unburned hydrocarbons (HC) into carbon dioxide ($CO_2$) and water ($H_2O$) by adding oxygen (oxidation). Reduction catalytic converters reduce nitrogen oxides ($NO_x$) by removing oxygen (reduction). The other options (a, c, d) have terms that are not the standard types of catalytic converters. "Carbonized" (a, c) refers to a process of turning into carbon, which is not relevant here. "Optimized" (c) is a general term and not a type. "Complex" and "simple" (d) are not technical types of catalytic converters.

Answer:

B. Oxidizing; reduction