In which situation is dew more likely than frost?

Correct answer: The surface is above freezing and has cooled to the dew point.

Answer: A. Dew is liquid water deposited on a surface. For it to be more likely than frost, the moist air or surface must cool to the dew point while the surface remains above the freezing point. Under that condition, water vapour condenses into liquid droplets. B favours frost because temperatures far below freezing support ice formation rather than liquid dew. C is unsuitable because completely dry air provides little water vapour for condensation. D describes an icy condition already associated with frost or frozen deposition, not ordinary liquid dew. The key is to check two thresholds in order: reach the dew point, then ask whether the surface is above or below freezing. Memory cue: above freezing plus condensation gives dew; below freezing gives frost.