I would say rhythm and rhyme.
A, if the underlined word is handed.
Making sure that the speaker is speaking in 1st person (I, me, my)
The correct answer is B. Was
I think Cath is the most memorable one because she is relatable for me. I have same problems as her. She has a social anxiety disorder, and only things that makes her happy are writing her Simon Snow fan fictions for her followers and writing her fiction in writing class. So cath is a freshman in university with her outgoing sister. Her sister will stop being a fangirl so Cath will have harder time for making friends. Book shows reality of fangirls. Cath have a hard time letting go her fandoms, and being more social. So most memorable thing in the book was develop of Cath for me.