In number 12 (up neatly) is a prep phrase
Quotations add emphasis to ideas, so A is out. If quotations add emphasis to ideas then they also add strong support to claims therefore C is out. Quotations add credibility to writing as well so D is out. Therefore B is the right answer, you would not include direct quotations in a story to add length to a boring story.
Answer:
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.