What is the meaning of appendix in the context of a book?

• A. A medical organ in the body
• B. A map at the end of a book
• C. Added information
• D. Additional material that is found at the end of a book, an essay or another written piece

Answer: (D)

Understanding the term in literature means recognizing the end-of-book space for extra material. In a book, an appendix is where the author places supplementary information that supports the main text but isn’t essential to its central argument. This includes data, tables, extended explanations, or source lists. That makes the description of “additional material that is found at the end of a book, an essay or another written piece” the best fit. The other options don’t match this context: the anatomical organ is a different sense, a map at the end is too specific, and simply “added information” doesn’t indicate its usual end-of-book placement.