basaltic rocks. silicate rocks. solid iron and nickel. molten iron and nickel.
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: The core of Earth is divided into two layers. The outer core is made of
Possibilities:
- basaltic rocks.
- silicate rocks.
- solid iron and nickel.
- molten iron and nickel.

molten iron and nickel.