Ajet plane leaves the stratosphere and returns to the ground. how does the temperature outside the jet change during its descent through the troposphere?   a. it decreases and then increases.   b. it decreases steadily.   c. it increases steadily.   d. it increases and then decreases.

Answer : A. It decreases and then increases.

Explanation :  Troposphere is the lowermost layer of atmosphere.

Stratosphere is next layer up to the troposphere. As the jet descends from stratosphere towards the troposphere, the temperature initially decreases and then at troposphere is roughly constant and then steadily increases.

So, option (A) is correct.

there is no correct list among the choices you've provided.

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