Future perfect tense means that an action will be completed before another point in the future, which means that the answer would be (d). hope this helped!
Answer:
It is about action and contributing to the common good.
<span>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 to study the table of contents or examine the index so that you can explore whether the topic of your choice is present in that book or not
so correct option is A and B
hope it helps</span>