using a paper filtering system using chromatography allowing the salt to settle allowing the water to evaporate
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: Which of these will best separate a saltwater solution?
Possibilities:
- using a paper filtering system
- using chromatography
- allowing the salt to settle
- allowing the water to evaporate

allowing the water to evaporate