The correct answer is Sentence 9.
The sentence should be written: Sadly, even after that water is found, only some of it's clean and safe enough to drink.
We know an apostrophe should be placed here because we could also say: Sadly, even after that water is found, only some of it is clean and safe enough to drink.
We need better context of the question!
I would do as you research. This way you can reference back to the sources as needed while you write your draft.
Hope this helped!
The correct answer is A because :
B. most slaves did not sue owners
C. slaves did not want to go back to Africa
D. slaves, at that point, were not allowed to go to west point
