Which statement best describes the weather shown by the blue triangles on a line on a weather map? a. a warm front drizzly weather b. a cold front can cause heavy rain, thunder, and lighting c. a stationary front may produce rainy or snowy weather for several days d. an occluded front can cause light to heavy precipitation that may last several days

The answer is; B

The tip of the blue triangles points to the direction in which the cold front is moving. Also, note that the blue color represents a cold front (as opposed to a red color that represents warm front). A cold front occurs when a cooler air mass wedges down and replaces, at ground level, the rising warm air mass.  The boundary between the two air masses exhibits cooling moisture that forms clouds and thunderstorms.