Correct Answer: Vehicular emissions

Solution : The primary cause of air pollution in urban areas is (A) Vehicular emissions

In urban areas, the combustion of fossil fuels in vehicles, such as cars, trucks, and motorcycles, is a major source of air pollution. The emissions from vehicle exhausts contain various pollutants, including nitrogen oxides (NOx), particulate matter (PM), carbon monoxide (CO), and volatile organic compounds (VOCs). These pollutants contribute to the deterioration of air quality and can have adverse effects on human health and the environment.

While industrial emissions and agricultural activities can also contribute to air pollution, especially in specific areas or regions, vehicular emissions are typically the primary cause of air pollution in densely populated urban areas. The large number of vehicles, combined with traffic congestion and inadequate emission control measures, can result in high levels of air pollution, particularly near roadways and in urban centers.

Efforts to reduce air pollution in urban areas often focus on implementing stricter vehicle emission standards, promoting public transportation, encouraging the use of electric vehicles, and improving urban planning to reduce traffic congestion and promote sustainable mobility options.