This is all no chemistry but the answer is C
In the given above, we have two densities which are 0.89 g/mL and 0.72 g/mL. We are also given that the liquids are immiscible. After the settlement of the liquids, they will form two layers.
The heavier substance, the one which has a higher density will be at the bottom and the lighter substance, the one which has a lower density will be at the top layer.
That would be C. Organelles
This question is very unspecific, but it is probably the Mantle. If that is wrong try Crust.<span />
