Answer
$A > C > B$
Work Step by Step
The fraction of an object's volume that is submerged in a liquid as it floats depends on the density of the object. If an object has a larger density, then a larger fraction of the volume will be submerged.
Object A has the largest fraction of its volume submerged, so object A has the largest density.
Object B has the smallest fraction of its volume submerged, so object B has the smallest density.
We can rank the densities of the objects in order, from largest to smallest: $A > C > B$
