The correct answer is A) Gusting winds shifting to the northwest with thunderstorms. When a cold front moves through an area, it typically brings a change in wind direction and the potential for thunderstorms and gusty winds. As the front passes, the wind direction shifts from southerly to northwesterly, and the drop in temperature and change in air mass can trigger thunderstorm activity. The other options are incorrect because: B) Light, southerly winds; high humidity and possibly fog - This would be more characteristic of the weather before the cold front arrives. C) Scattered clouds with light to moderate southeasterly winds and possibly fog - This does not reflect the typical weather changes associated with a cold front passage. D) Overcast with steady, light rain or drizzle - While this could occur, the more likely scenario is the gusty winds and thunderstorms described in the correct answer.