Question

which step of desalination must be done before water is condensed and collected?
water is heated until it evaporates.
water is frozen, so it becomes ice.
water is transported from one area to another area that has little water.
water is collected and salt is allowed to settle at the bottom.

Explanation:

In desalination, water is first heated to evaporate it. The vapor then condenses and is collected as fresh - water. Freezing is not a typical pre - condensation step in desalination. Transporting water between areas is not part of the desalination process itself. Allowing salt to settle is not the step before condensation. Evaporation is the key step before condensation in desalination.

Answer:

Water is heated until it evaporates.