Answer:
The correct answer is A. The people of the Middle East obtain more freshwater sources by removing salt from water in a process known as desalination.
Step-by-step explanation:
Desalination refers to any of the various procedures that remove excess salts (especially sodium chloride) and other minerals from the water. The process of desalination requires a relatively large amount of energy and is therefore by no means economically feasible in all places. In desert regions, the abundant solar energy can be used.
Less than 1% of the global water supply comes from desalination plants, this is approximately 80 million m3 per day.
In the Middle East a lot of fresh water is made from seawater. For example, 70% of drinking water in Saudi Arabia is produced by desalination. In December 2015, the largest desalination plant in the Western Hemisphere came into operation in Carlsbad, California.