The order of the liquids will depend on the density of each of them. The densest will go to the bottom of the container, the least dense will be on top.
Let's see what the density of each of the substances is, let's assume that we are at room temperature.
Ice density = 0.917g/cm^3
Corn oil density =0.925g/cm^3
Ethanol density = 0.789g/cm^3
The order of density from lowest to highest is:
Ethanol < Ice < Corn oil
This will be the order from top to bottom, so the answer will be:
B. ethanol, ice, corn oil C