To decrease the oversaturation of a solution, the best option is to dilute the solution. Dilution reduces the concentration of the solute in the solution, which can help bring it back to a stable state.
The other options would not effectively decrease oversaturation:
- Adding more solute would only increase the oversaturation further.
- Cooling the solution may have varying effects depending on the solute, as some solutes may become less soluble with lower temperatures, but it does not guarantee a reduction in oversaturation.
- Adding a different solute could potentially cause precipitation or other reactions but would not directly address the oversaturation of the original solute.
Thus, the most effective method is to dilute the solution.
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