using a magnet to extract the salt adding a colored dye to the mixture pouring the mixture through a filter boiling the mixture until the water evaporates
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: Which action is the best method to separate a mixture of salt and water?
Possibilities:
- using a magnet to extract the salt
- adding a colored dye to the mixture
- pouring the mixture through a filter
- boiling the mixture until the water evaporates

boiling the mixture until the water evaporates