Question

42 how does the process of desalination generate fresh water? multiple choice oil is mixed with the saltwater and the salt is transferred to the oil leaving freshwater behind. chlorine is added to saltwater which causes the salt to come out of the solution making it easier to remove. small volumes of saltwater are combined with larger volumes of freshwater to dilute the salt concentration. saltwater is either heated or filtered to separate the salt from the water.

Explanation:

Desalination processes like distillation (heating to evaporate water, leaving salt behind) and reverse osmosis (filtering water through a membrane to separate salt) are common. The first option about oil - salt transfer is not a standard desalination method. Adding chlorine is for disinfection, not desalination. Diluting saltwater with freshwater does not remove salt, just reduces its concentration. Heating (as in distillation) or filtering (as in membrane - based processes) separates salt from water.

Answer:

Saltwater is either heated or filtered to separate the salt from the water.