Answer:
Based on the information provided, the correct answer is:
a) Advection Fog
Explanation:
Advection fog is a type of fog that occurs when warm, moist air moves horizontally over a colder surface. It can appear suddenly during the day or night and is more persistent than radiation fog. This type of fog often forms in coastal areas where warm ocean air moves over cooler land surfaces.
Advection fog is different from other types of fog mentioned in the options:
- Upslope fog (b) forms when moist air is forced to rise along a slope or mountain.
- Steam fog (c), also known as evaporation fog or sea smoke, forms when cold air moves over a warm water surface, causing the water to evaporate and create fog.
- Valley fog (d) forms when cool air becomes trapped in a valley or basin and condenses near the surface.
Therefore, based on the description provided, the most appropriate answer is a) Advection Fog.