How are the stories, abuela events the zero and born workers theme’s similar

The theme of "Abuela Invents The Zero" to me is selfishness. I chose selfishness because Constancia only thinks about herself. She deosn't want to be seen with her family because she will be embarassed. She won't even help her lost grandma in church because she doesn't want to be made fun of at school.

the answer is: round.

in literature, round characters are considerably complex and experience or are subjected to unpleasant situations. as a consequence, they go through crucial sentimental and psychological development, which can cause surprise in the readers. in this case, juan's dramatic transformation is related to the adversities he meets at school.