An index is a

An index is a

• A. Explanatory note
• B. Record of materials in a library
• C. Guide to look at materials
• D. Reserved materials

Answer: (C)

An index is a tool that helps you find information quickly. It lists topics, names, or subjects and points you to where that information appears, such as page numbers in a book or locations within a library. Because its main job is to guide you to the exact place to look, it serves as a guide to look at materials. It isn’t the full record of every item the library owns—that would be the catalog—nor is it an explanatory note that clarifies content, and it isn’t something kept aside as reserved materials. For example, in a biology book, the index might list “photosynthesis” with the pages where it’s discussed, directing you straight to the relevant material.

An index is a tool that helps you find information quickly. It lists topics, names, or subjects and points you to where that information appears, such as page numbers in a book or locations within a library. Because its main job is to guide you to the exact place to look, it serves as a guide to look at materials. It isn’t the full record of every item the library owns—that would be the catalog—nor is it an explanatory note that clarifies content, and it isn’t something kept aside as reserved materials. For example, in a biology book, the index might list “photosynthesis” with the pages where it’s discussed, directing you straight to the relevant material.