Answer:-
In a professional paper, the appendix is added at the very end, after the main body, references, and any endnotes. It provides extra information that supports the main content but is too detailed or lengthy to include in the main sections. This can include raw data, charts, graphs, questionnaires, or sample calculations. Each appendix should be labeled (Appendix A, Appendix B, etc.) and referenced at the appropriate point in the main text. Placing it at the end ensures the core message stays clear while still offering readers access to additional information if they want to explore it in more depth.
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