Respuesta :
The answer to this question is C. a summary of the books contents.
Answer: C) a summary of the book’s contents.
Explanation: A library catalog is a register of all bibliographic sources in a library (like books, files, maps, newspaper, etc). The main function of a library's card catalog is to enable a person to find a book (or another kind of bibliographic material) even if this person doesn't know all the information, in order to do that a card catalog usually includes the author, the title, the subject, date and city of publication and the call number.