Question 1230Navigation General

The correct answer is D) All of the above. Fog generally clears when the wind direction changes, temperature increases, and wind speed increases. These meteorological factors work together to disperse and dissipate the fog. A change in wind direction can shift the fog layer, while an increase in temperature or wind speed can cause the water droplets in the fog to evaporate more rapidly. All three of these conditions contribute to the clearing of fog. The other options (A, B, and C) are also correct, but D encompasses all the relevant factors that lead to the clearing of fog. This understanding is important for Coast Guard captains to know when navigating in foggy conditions.