I think tracheae which is B not sure tho
Yes, it could be.
But there are also many other things it could be the result of.
Answer: warm front
Explanation: When a warm air mass meets a cold air mass, the warm air rises since it is lighter. At high altitude it cools, and the water vapor it contains condenses. This type of front is called a warm front. It generates nimbostratus clouds, which can result in moderate rain.
That Energy comes from SUNLIGHT.....
Don't trust those link, my guy its a scam or virus