Hello! Your answer is W.
The layer W is called the convection zone. The lower bit of this zone is hotter (as it is closer to the core) and the outer is cooler. Since heat rises, liquid will rise in this zone, and then cool down, and sink again. This causes a circular transfer of energy.
Y and Z both transfer heat outwards - they are the radiative zone and the inner zone, respectively.
Hope this helps!
Answer:
a,b and c
Explanation:
( it might be wrong pls dont report me just let me kno y its wrong )