Climate is the long-term average of a region's weather. Climate describes the weather of a large area. Weather is the long-term average of a region's climate. Weather describes the climate of a large area.
I gave my students this multiple choice question: How is weather related to climate?

Only one answer is correct among these 4 choices:
- Climate is the long-term average of a region's weather.
- Climate describes the weather of a large area.
- Weather is the long-term average of a region's climate.
- Weather describes the climate of a large area.

Could you tell me which one is correct?

Climate is the long-term average of a region's weather.