Answer :
Final answer:
The correct option for the possibility of fog in this question is C. Light flashing warns about heavy rain.
Explanation:
The subject of this question is Physics and the grade level is High School.
The correct option for the possibility of fog in this question is C. Light flashing warns about heavy rain. Fog is caused by the condensation of water vapor in the air, which occurs when the air is saturated and contains a high amount of moisture. Heavy rain can create the ideal conditions for fog to form, as the moisture from the rain can saturate the air and cause condensation to occur.
In addition, it is worth noting that option D. Light flashing signifies windy conditions is not directly related to the formation of fog. While wind can affect the movement and dispersion of fog, it does not cause fog to form on its own.
