The correct answer is C) cold front. A cold front is characterized by a line of clouds, sharp changes in wind direction, and the presence of squalls. As a cold front moves in, the cooler air behind the front pushes the warmer air ahead of it, causing the air to rise rapidly and generating clouds, wind shifts, and potential squalls. In contrast, a warm front generally has a more gradual transition, a warm sector has stable, warmer air, and an occluded front is a combination of a warm and cold front. These other weather phenomena do not exhibit the distinct line of clouds, wind shifts, and squalls that are associated with a cold front passage.