The correct answer to this question is letter "C. A stationary front may produce rainy or snowy weather for several days."
There exists the same question from other source with the following choices:
A. A warm front brings drizzly weather.
B. A cold front can cause heavy rain, thunder, and lightning.
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.
