C is the answer you are looking for. A common idea isn't a moral, the generalization is the Main Idea, but not quite the moral. The thought of the characters almost never have the moral in them. Therefore, C is your answer.
Answer:
D. The narrator is panicking during her first day on the job.
Sometimes you just have to say the sentences to yourself to see what sounds right, and that only works sometimes, but I do believe that the correct answers are "its" and "his"