Which statement about inversion's impact on fog and air quality is accurate?

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Multiple Choice

Which statement about inversion's impact on fog and air quality is accurate?

A temperature inversion creates a stable layer where temperature increases with height, which suppresses vertical air movement. Because the air near the ground can’t rise and mix with cleaner air above, pollutants emitted at the surface become trapped and accumulate, especially in valleys or during stagnant high-pressure conditions. When moisture is present, that trapped layer can become saturated, so fog forms as the air near the ground cools and reaches 100% relative humidity. This explains why the statement about inversion’s impact is correct: it traps pollutants and can promote fog by limiting vertical mixing near the ground. Inversions don’t promote rapid mixing or clear pollutants, and while they stabilize the atmosphere, they don’t inherently make rain more likely; the stable layer tends to suppress the upward motions needed for widespread rain unless a mechanism erodes the inversion.

A temperature inversion creates a stable layer where temperature increases with height, which suppresses vertical air movement. Because the air near the ground can’t rise and mix with cleaner air above, pollutants emitted at the surface become trapped and accumulate, especially in valleys or during stagnant high-pressure conditions. When moisture is present, that trapped layer can become saturated, so fog forms as the air near the ground cools and reaches 100% relative humidity.

This explains why the statement about inversion’s impact is correct: it traps pollutants and can promote fog by limiting vertical mixing near the ground. Inversions don’t promote rapid mixing or clear pollutants, and while they stabilize the atmosphere, they don’t inherently make rain more likely; the stable layer tends to suppress the upward motions needed for widespread rain unless a mechanism erodes the inversion.

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