The best place to look for the latest information on a current topic is an encyclopedia thereaders' guide the library catalog

The Readers' Guide

Explanation:

When you need information about a subject, it is important that you look for a source that provides up-to-date information and needs about that subject matter. The world is constantly evolving, so the subject information may change, and if you search for outdated information, that information may not be true.

Among the options given in the question, the reader guide is a source that will direct the student or researcher to find true and accurate up-to-date information on a particular subject.

answer; ///i believe the correct answer is (b) the writing of the ancients who lived in india after the indus valley inhabitants died out;

aa

explanation:

literally the answer is aa. not kidding. aa is a group.