Answer:
annotate
Explanation:
If you are in charge of going through incoming mail, you may have to underline or write in the margins anything you find especially interesting or important.
I'd go with B - Article. There are hundreds of good examples for the answer being B. For example, "a book" ('a' is an article - 'book' is a noun), "an apple" ('an' article - 'book' noun). Those are just the simple ones.
If you could send over a picture of the passage that'll be great but the answer is that he is most famous for his "I have a Dream" speech. He wanted the US to be void of segregation and racism.
