Answer to Question #146258 in English for Faith

Question

An index to a printed source is usually found:
1.at the back of a book.
2.in the front of a book.
3.at the back of the title page.

Answer 1

An index to a printed source is found at the back of a book. This is called Back of Book (BoB) indexing. So the correct answer is 1.at the back of a book.