The clouds in the stratosphere produce more rain. The air in the stratosphere has a greater density. The composition of the stratosphere lacks ozone. The temperature of the stratosphere warms at higher altitude.
I gave my students this multiple choice question: How is the stratosphere different from the troposphere?

Only one answer is correct among these 4 choices:
- The clouds in the stratosphere produce more rain.
- The air in the stratosphere has a greater density.
- The composition of the stratosphere lacks ozone.
- The temperature of the stratosphere warms at higher altitude.

Could you tell me which one is correct?

The temperature of the stratosphere warms at higher altitude.