What is the theme of "My Favorite Chaperone"?

Does any one read this story "when mr. came to dine". in 9th grade. plz i need with one question about this story?

Which passage is the best example of deductive reasoning? a. aaron wants to try something new for lunch. he asks his coworkers what they like and then decides where to eat b. everyone in mr. kim’s class got an a on the test. casey is in mr. kim’s class, so he must have received an a on the test. c. petra sees that all the kids at her school walk home. tomorrow she will tell her mother she doesn’t need a ride home. d. saul is buying a present for his sister. he asks his mother for suggestions and then goes to the mall to find something.

Could someone me with this question?