The correct answer is D. Index
Explanation:
An Index is a section of the book, usually placed at the end of a book or printed document that helps the reader locate information in the book related to some specific topic or term, a book index is basically an alphabetical list of keywords or more used terms in a book along with the pages in which there is content related to these words or terms. In this way, the section that lists a set of specific words, terms or topics and the pages in which these can be located in printed documents or books is called Index.
