Answer:
C
Step-by-step explanation:
Discussion
Foil is probably the wrong word. She really is like a mother to Juliet and Juliet (who does not really have a friend with whom she can discuss her private life), needs the nurturing that the Nurse provides. I would pick C.
Juliet is the main concern of the Nurse, who truly wishes for Juliet's happiness.
I'd pick C but it is not the perfect answer.