If the night is clear but wind is very strong why can dew formation decrease?

Correct answer: Strong wind prevents a stable cool moist layer near surface

Correct answer: B. Clear skies encourage radiational cooling, but dew also needs suitable near-surface conditions. When wind is light, a shallow layer of air touching the ground can cool, become moist, and reach saturation. Strong wind continually mixes this layer with air above it. That mixing can bring relatively warmer or less-saturated air into contact with the surface and prevents a stable cool, moist layer from developing. Consequently, the surface or adjacent air may not reach the conditions needed for visible dew, even under a clear sky. A is wrong because wind does not automatically turn vapour into ice. C says “always” and reverses the effect; strong wind does not always push the surface below the dew point. D is also false because wind alone does not necessarily create clouds. Memory cue: clear sky cools, but calm air helps dew settle.