Desalination:
a. can be used to provide fresh water
b. is being done through the use of nuclear power
c. produces over 50 million gallons of water a day
d. all of the above

Desalination can be used to provide fresh water. This produced water can be used for drinking as well as irrigational purpose. The byproduct of desalination is the creation of salt. The correct option among all the options that are given in the question is the first option or option "a".

The answer i think is d

2. x2 + 8x + 12 = 0 to prove: x = -6 or x = -2