Answer:
I think it is D
Step-by-step explanation:
I think it is D becuase space (yes the solar system) cause space is super cold so the higher we get the colder beacuse the higher the colder like when you see a picture of a mountain then usally have snow at the very top of it and if it the opposite so basically the core of Earth we be melting cause were going closer to the Earths core.