The answer is 3, nervousness. It is quite easy to figure out if you have experienced those feelings yourself, and Lara could be seen as "shy" from a third-person perspective based on her quiet voice and inability to look the teacher in the eye.
The inside address is usually the address of the recipient, the person the letter is being sent to. The sender's address is at the top, then the date, followed by the recipient's address.
ANSWER: (A) who the letter is being sent to.
Hope this helps! :)
The answer to this question is possibly: B. To show that the narrator is trying to be smarter. Looking back at the sentence, I can use context clues. I can specifically look at where the sentence said, "Something inside me began to die." That is suggesting that the narrator is influenced by her mother's face to allow something to die within her. In other words, she realizes that she needs to change into a new, better person. Hope that helps.