The correct answer is A.
The sentence should be written like this: <span>Sadly, even after that water is found, only some of it's clean and safe enough to drink.
Because the sentence is saying "only some of IT IS clean and safe enough to drink," an apostrophe should be used.
</span>
I do not know the answer but why not look the words up in the dictionary.
Answer:
1 - Because of lack of time, we didn't manage to finish the work.
2 - When my sister is angry, her face will turn red.
3 - Because chocolate has a low-melting point, it melts very easily.
4 - Since I'll be working late, I'll eat downtown.
5 - Normally they wouldn't be too concerned about it, but this just crossed the line.
6 - If you pay your bills on time, you can have a good credit score.
7 - He will drink some water because he is thirsty.
8 - Give us a call when you get back from your trip.
9 - You need to remain calm even if everyone else panics.
10 - I won't allow you to see that movie even though you are old enough to go.
11 - We can get some new clothes as long as the store is open late.
12 - The fireworks show will start after the sun goes down.
I'd say the fact that the characters are talking animals is a pretty good indicator that this story was made for children.