Description:
The correct answer is:
✅ Smog
Why?
Smog (smoke + fog) is a direct result of air pollution mixing with sunlight or fog:
Primary Pollutants: Vehicle exhaust, factory emissions (NOx, VOCs, PM2.5).
Photochemical Reaction: Sunlight transforms these into ozone and haze (e.g., Los Angeles smog).
Health Impact: Linked to asthma, lung damage, and reduced visibility.
Why Not the Others?
❌ Fog: Natural condensation (unrelated to pollution).
❌ Sleet: Frozen raindrops (a weather event).
Fun Fact: The term "smog" was coined in 1905 to describe London’s coal-polluted fogs! 🏭🌫️
Bonus: Masks and air purifiers help combat smog’s effects. 😷💨