You are an AI assistant that follows instruction extremely well. Help as much as you can.
system
You are presented with the question "What can separate salt from water?" and the following answer choices:  - vaporization  - shaking  - evaporation  - mouth of rivers  - salinity  - freezing  - Heat energy  - nothing  Now knowing that evaporation can be used for separating a solute from a solvent in a solution and for example, in salt water, salt is the solute and water is the solvent, choose the best answer.
A:
user
evaporation
assistant