WorldCat is described as which of the following?

• A. The Largest Online Public Access Catalog (OPAC) in the World
• B. A Catalog of All Libraries in North America
• C. An Interlibrary Loan System
• D. A Bibliographic Database of Catalogs

Answer: (A)

WorldCat is the world's largest online public access catalog. It acts as a global union catalog that pulls together catalog records from thousands of libraries, so you can search for books, journals, media, and more and see which libraries hold specific items and how to access them. It isn’t limited to North America, nor is it an interlibrary loan system by itself, and it isn’t merely a database of catalogs. It’s a comprehensive catalog of library holdings worldwide, which is why that description fits best.