Answer:
The correct answer is:
C. Locate the subject card for the book in the card catalog.
Step-by-step explanation:
There are some different ways in order to look for a book in the library in an easy way, depending on the information that we could have in our hands about it.
The card catalogs are the documents that contain the most relevant information about the books that it is possible to find in the library, and they are classified according to three different topics as follow:
1. Subject card
2. Title card
3. Author card
As in this case, when the author and the title of the book is unknown, it would be necessary to look for the book taking into consideration the subject.