While looking for publication details of a book, a researcher may consult the book's copyright page, which may appear:

Correct option is B

Explanation:

The copyright page of a book typically contains important publication information such as the copyright date, publisher, edition, ISBN number, and other legal information.

This page is commonly located on the reverse (back) side of the title page. The title page is the one where the book’s name, author, and other introductory details are printed, and the copyright page is directly behind it.

In most books, the copyright page is usually placed immediately after the title page. While in some cases it may be on a different page, it is most often found on the reverse of the title page.
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Information Booster:

The copyright page is an essential part of a book as it serves legal and informational purposes, detailing copyright ownership and other specifics such as the publisher and date of publication.

In addition to copyright information, this page may also provide the print history (first edition, reprints), credits for design or illustrations, and a disclaimer of legal responsibility.

For researchers, the copyright page is particularly valuable when verifying the edition and authenticity of a book, as it helps determine whether the book is an original or a reprint.

In some cases, forewords, acknowledgements, or even the bibliography of a book may also appear near the title page, but the copyright page itself is almost always at the reverse of the title page.