Final answer:
The pollutant generated by the reaction of UV light and emissions from internal combustion engines is ozone (O3), which is formed from nitrogen oxides (NOx) and volatile organic compounds (VOCs) in the presence of sunlight.
Step-by-step explanation:
The pollutant that is generated by the reaction of UV light and emissions from internal combustion engines is d. ozone (O3). Ground-level ozone is not directly emitted into the air; instead, it is formed when sunlight and heat cause a chemical reaction between nitrogen oxides (NOx) and volatile organic compounds (VOCs), which are emissions from industrial facilities and motor vehicles. This process occurs more frequently on hot, sunny days in urban environments and can result in unhealthy levels of ozone that can trigger health problems as well as damage to vegetation and ecosystems.