If you've located three books on a topic you're researching for an essay, the first thing you should do on appraising any of these books is

Aexamine the index.
Bscan the book from front to back.
Cstudy the table of contents.
Dinspect the book jacket for notes about the author.

Verified Answer :

I would probably say ---A. examine the index.---


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