To separate the mixture of sand and salt after dissolving the salt in water, the correct processes are:
- Filtration to collect the sand. The sand will remain as a residue on the filter paper, while the salt solution will pass through.
- Evaporation or crystallization can be used to collect the salt from the salt solution after filtration.
Among the options you provided, none of them accurately describe the correct processes, but the closest relevant method for separating the sand would be filtration. The sand can be collected this way, and the salt must be collected through additional steps like evaporation or crystallization.
If we are to choose based on available options while correcting for terminology errors, the closest and most relevant choice is filtration to collect the sand (without any mention of how to collect the salt).