Where is the poet? Post the poet then I can answer it.
Answer: B is the answer
Explanation: the sentence is in the past so you have to put had it's kinda hard to explain
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>