Answer the following question given this paragraph: 

As the fast-moving cold air mass keeps advancing, so does the cold front. Cold fronts often bring sudden changes in the weather. There may be a thin line of storms right at the front that moves as it moves. In the spring and summer, the storms may be thunderstorms and tornadoes. In the late fall and winter, the storms may bring snow. After a cold front passes, the cold air mass behind it brings cooler temperatures. The air is likely to be less humid as well. Can you explain why?.


Q: What type of fronts often bring sudden changes in the weather, including different types of precipitation, depending on the season?

 Choices:

- stationary fronts

- occluded fronts

- warm fronts

- cold fronts

A:
cold fronts
