Because the book and the play will have some similarity's mostly the important details so you can have a better view of romeo and Juliet.
So... what's youre question, you gave us the info but...
An antecedent is the word that a pronoun describes. A only has 1 antecedent (school) and 1 pronoun (its). B has 1 pronoun (her). C has 2 antecedents (norm and Jane) and one pronoun (their). D has 2 pronouns (His and her).
The answer than is C :)
