Layers A

Layers B

Layers C

Layers D

Answer :-

Option B is your answer , because layer B [ outer core ] is made of molten iron .

More information :-

About layers of earth

Layer A :-

Layer A in the given figure is known as inner core it is the hottest part in the earth

Layer B :-

Layer B is known as outer core of earth , it protects the core & it contains of molten iron .

Layer C :-

Layer C is known as mantle . Mantle contains rocks , minerals & it the largest layer of the earth

Layer D :-

Layer D is known as crust . Crust is the part of earth where do we live in , it contains of land etc...