What is one means of achieving desalination? 

A)  by filtration 
B)  by salt-eating bacteria 
C)  by osmosis 
D)  by distillation

Desalination

The process of removing salt and other minerals from seawater to produce fresh water suitable for human consumption or irrigation.

Filtration

A method for separating solids from liquids or gases using a filter medium that allows only the fluid to pass through while retaining the solid particles.

Osmosis

The movement of water through a semipermeable membrane from an area of low solute concentration to an area of high solute concentration.