Option 1: Kuwait. This option suggests that Kuwait is the largest producer of desalinated sea water. However, there is no evidence to support this claim.
Option 2: Iran. This option suggests that Iran is the largest producer of desalinated sea water. However, there is no evidence to support this claim.
Option 3: Saudi Arabia. The correct answer is option 3. Saudi Arabia is indeed the largest producer of desalinated sea water in the world. The country relies heavily on desalination to meet its domestic water needs due to the scarcity of freshwater resources. Saudi Arabia has invested significantly in desalination technology and has numerous desalination plants along its coastline.
Option 4: Iraq. This option suggests that Iraq is the largest producer of desalinated sea water. However, there is no evidence to support this claim.
In conclusion, the correct answer is option 3: Saudi Arabia.