The answer is Its.
Theirs/their pertains to more than one person belonging to items.
It's is a contraction form of "it is".
Answer:
I believe it is B
Explanation:
their ball was on the neighbors side, which was their problem, and they solved it by giving the dog a treat so they could calm the dog down and get their ball back.
The answer that you are looking for should be a frame story.
Answer:
B. sorry, doubted, sigh
Explanation:
I took the test on edg :D