The method that can be used to separate the components of a solution is distillation.
Distillation works based on differences in boiling points of the components in the solution. It is commonly used to separate liquids from solutions, such as separating water from a saltwater solution.
While filtration can separate solids from liquids, it is not effective for separating components of a solution where all components are in liquid form. Decantation and magnetic separation are not typically used for solutions either.