Answer:
Geosphere.
Explanation:
Geosphere is the internal structure of the Earth, but this definition most of the time tend to confuse people, that's way is better define it like the solid parts of Earth. Mantle, core and crust are in the Geosphere.
But, it's important to say that Geosphere is defined for some authors like a collective name including lithosphere, the hydrosphere, the cryosphere.
