The correct option is A Muddy water
In sedimentation, the insoluble solid substances settle down after the mixture is left undisturbed and the clear liquid floats on top of it.
In the given options, only in case of muddy water, the components can be separated. The heavier mud will settle down and then the clear water can be transferred to another beaker carefully without disturbing the mud.
While in rest of the options, the solid components are soluble in water, hence sedimentation cannot be followed here.