Answer:
Occurs when warm air passes over a cool surface
Explanation:
Advection Fog is a form of fog that can arise when the weather is windy. It is generated naturally when horizontal moving air is warmer and it contains more dampness compared to the ground surface it moves around. This air becomes cold as a result of the cold coming from the ground below.
Hence, in this case, the correct answer is Advection Fog "occurs when warm air passes over a cool surface."