The answer is Its.
Theirs/their pertains to more than one person belonging to items.
It's is a contraction form of "it is".
The "lottery" by Shirley Jackson
Theme: someone who is blamed for the evils of a society and banished in order to expel sin and allow for renewal.
Theme sentence: The danger of tradition and blindly following along is not always a good idea
if someone leaves their house in the pursuit of success they are willing to go outside of there comfort zone and take on new challenges.
Answer:
The most apparent theme of The Bat-Poet is the value of looking at life from a different point of view.
Explanation:
This theme is developed through contrasts between the bat-poet and the mockingbird, who represent different kinds of poets, and between the chipmunk and the other bats, who represent different kinds of audiences.