Correct Answer:
C. Vehicular and industrial emissions
Correct answer: Vehicular and industrial emissions. Emissions from vehicles and industry are the main year-round cause of smog in Lahore.
Background: Smog forms when smoke and fog combine with pollutants.
- Crop burning: Crop burning adds to smog in autumn but is not the main year-round cause.
- Construction: Construction dust adds to pollution but is not the main cause.
- Deforestation: Deforestation does not directly produce smog.
Did you know? Lahore is often among the cities with the worst air quality in the world in winter.
Memory trick: Smog = smoke + fog.