Which part of a book is typically visible when it is placed upright on a library shelf alongside other books?

### Why this is right A book’s **spine** is the narrow, bound edge that joins its front and back covers. When books stand upright side by side on a shelf, their spines face outward, so you can usually see the title and author without removing a book. ### The concept A book has several named parts. The **front cover** protects the pages at the opening side, while the **back cover** protects them at the other end. The **endpaper** is a sheet of paper attached inside a cover, often joining the cover to the first or last page. The spine connects the covers along the bound edge and is the part normally visible on a shelf. | Part | Where it is | What it does | |---|---|---| | Spine | Bound edge | Joins the covers and is usually visible on a shelf | | Front cover | Outside, at the beginning | Protects the pages and often shows the title | | Back cover | Outside, at the end | Protects the pages and may contain a summary | | Endpaper | Inside a cover | Connects the cover to the book’s pages | ### The other options - **B. Front cover**: This is the outer face at the beginning of the book. It is visible when the book is held facing you, not usually when it stands among other books on a shelf. - **C. Back cover**: This is the outer face at the end of the book. It is visible when you turn the book around, but it usually faces inward or outward across the shelf rather than toward you. - **D. Endpaper**: This is inside the book, attached to the cover, so it is not normally visible while the book is closed on a shelf. ### Terms - **Spine**: The bound edge that holds a book’s pages and connects its covers. - **Front cover**: The outside cover at the beginning of a book. - **Back cover**: The outside cover at the end of a book. - **Endpaper**: A sheet attached inside a cover, linking it to the pages. ### Remember On a shelf, look for the bound edge: that is the spine.