If I were to chose one of the main characters I would choose Dorthy because she seems so motivated to change the world into a better place. In the beginning she wants to leave her simple/ordinary life behind for a better, more colorful life. During the end, all she wants is to go back home because this better, more colorful life is very stressful and action filled. She reminds me of myself, I want a different life than what I already have but when I sleep over at one of my friend's house, it just seems so weird compared to mine and all I want to do is go back home.
In a film's story, the director's vision has to be accomplished by all of the staff. Is that your question?
The answer to this question is (1) Edgar Degas; (2) chalk
so D. would be the correct one.
