Question

Library is to book as book is to D. cover C. binding B. copy A. page

Answer 1

correct answer is A. page
its because a library consists of books in the same way book consists pages

Answer 2

Library is to book as Book is to A) Page.

Library is a place where a collection of books are placed. In the same way, the collection of pages makes a book. The other options like Cover, Binding and Copy do not match with the relationship between library and book.

Cover is the closure of a book. Binding is tying up all the pages. Copy is another book of the original one. So, library is to book as Book is to Pages.