Which statement is true about stationary fronts?

The statement regarding stationary fronts being defined by their maintenance of a boundary without significant movement is accurate. Stationary fronts occur when a warm air mass and a cold air mass collide but neither is able to displace the other. This is typically characterized by prolonged periods of cloudiness and precipitation, as the air masses are in conflict but neither is advancing, leading to sustained weather patterns over a particular area.

Understanding stationary fronts helps to clarify their role in meteorology. They can lead to persistent weather conditions because of the lack of movement, unlike cold or warm fronts that generally bring about more dynamic changes in weather as they move through an area. Therefore, stationary fronts are significant in forecasting because they denote stability in terms of a weather boundary, resulting in potentially long periods of similar weather conditions.