Question

What is the preface or introduction to a book?

a page at the front of a book that lists units and chapters with their page numbers
an alphabetical list of all the specialized words and terms used in the book and their definitions
a statement of the author’s purpose in writing the book, which may include suggestions for using the book
an alphabetical list of all topics covered in the book and the pages on which they can be found

Answer 1

It should be the third one, a statement of the author's purpose in writing the book, which may include suggestions for using the book.

Answer 2

The answer is C: a statement of the author’s purpose in writing the book, which may include suggestions for using the book.

A preface is an introduction to a book written by the author of the book. A preface usually includes the story of how the book came to being —this includes the author´s purpose in writing the book—, the ideas that cemented its development, and, finally, they usually include acknowledgements to the people or institutions that helped the project come to a conclusion. The preface is usually signed, and following the signature the date and place of writing is included.