Explanation:

- Distillation: This is a process where impure water is boiled, and the steam is collected and condensed in a separate container. This method effectively removes many solid contaminants.

- Correct Answer

- Sedimentation: This involves letting solids settle at the bottom of a liquid over time. It's useful for solid-liquid separation but doesn't involve boiling.

- Filtration: This process involves passing a liquid through a filter to separate out solids. It’s different from distillation as it doesn’t involve boiling or collecting steam.

- Decantation: This involves pouring liquid off the top when sediment has settled at the bottom. It doesn’t require boiling or collecting condensed steam.