Which process is suitable for obtaining the water from an aqueous solution of sugar?

Answer is: distillation.

Solution of sugar and water has a uniform composition and is able to be separated by physical means.  

Solution is homogeneous mixture has the same proporties of its components throughout any given sample.  

Solution of water and salt, can be separated with distillation (process of heating and cooling). Water evaporates and sugar remain in the beaker.