C is the answer, i know this is late but it can at least help some one else maybe
Answer: noun
Explanation:the study of the physical features of the surface of the earth and their relation to its geological structures
A fog is just a cloud at the ground. Fog formation can occur in two ways. First, the air is cooled to the dew point which leads to the formation of fog droplets. When the air temperature is the same as the dew point temperature, condensation occurs on tiny particles floating in the air. The second method of fog formation requires water to evaporate from the surface into the air, raising the dew point until condensation occurs.
How we supposed to help if we can’t see the image?
