Respuesta :
I would probably say ---A. examine the index.---
it might be C but I'm leaning more on the A side
it might be C but I'm leaning more on the A side
So the question is asking to choose among the following choices that first thing that you should do on appraising any of books that contains the topic that you're researching for, and base on the said question, I would say that the answer would be letter A. examine the index. I hope you are satisfied with my answer and feel free to ask for more