You are presented with the question "What causes cloudy and rainy weather?" and the following answer choices: 
- Cold air forming fog
 - a hemisphere is tilted away from the sun
 - Warm air near the oceans
 - Breathing too fast or too slow
 - Cold winds near the mountains
 - Warm air moving into cold air
 - Earth's axis of rotation is tilted
 - extreme heat and pressure

Now knowing that awarm front causes cloudy and rainy weather and warm air moving into an area of cold air is called a warm front , choose the best answer.


 

      Warm air moving into cold air   