The 2nd and 4th one due to the fact it doesn't give a valid reason but more of an effect of doing so.
A, analyze because you are thinking about the events and the character trying to understand the story.
I just got done reading the book. Do you want me to tell you the ending?
The author's main purpose for including the description of Myra and her brother is to show that Myra how being responsible for her brother impacts on her ability to have friends. Instead of playing on the field at recess, she sits in the neutral zone with her brother. As a result, she is teased by the girls in her class. After a while, Myra becomes sick and ends up in the hospital. After that, all the girls in her class suddenly care about her and visit her.
What’s the book called or whatever it is ?