What changes would a cold front bring to a warm, dry area?

A)extended period of rain
B)several gray skies
C)dry and asunny skies
D)rain or thunderstorms

I think it is either a or d but I am leaning more to a, so please help!

I meant b or d or even a. I really need help.

http://www.google.com/#q=changes+would+a+cold+front+bring+to+a+warm%2C+dry+area

To determine the correct answer, we need to understand the nature of a cold front and how it interacts with a warm, dry area.

A cold front is a boundary between a cold air mass and a warm air mass. As the cold front advances, it pushes the warm air upward, forcing it to cool and form clouds. This process can lead to precipitation, such as rain or thunderstorms, along the cold front.

In the case of a warm, dry area, the arrival of a cold front would typically bring changes like the following:

A) Extended period of rain: This option suggests that the cold front would result in a prolonged period of rain. While cold fronts can bring precipitation, an extended period of rain is not necessarily the common outcome.

B) Several gray skies: This option suggests that the cold front would lead to overcast or cloudy conditions. It is a possibility as cool air masses often bring cloud cover, but it does not address the potential for precipitation.

C) Dry and sunny skies: This option implies that the cold front would maintain the dry and sunny conditions of the warm area. However, the interaction of a cold and warm air mass usually leads to changes in weather patterns, which often include some sort of precipitation.

D) Rain or thunderstorms: This option acknowledges one of the common outcomes of a cold front interacting with a warm, dry area. The lifting of warm air and the formation of clouds along the boundary can result in rain or even thunderstorms.

Based on the information provided and the understanding of the interaction between a cold front and a warm, dry area, the most suitable answer would be D) rain or thunderstorms. This option best represents the potential changes that a cold front could bring to a warm, dry area.