Which part of a report contains all relevant information related to the report?

The body of a report is the section where all relevant information is included, providing a detailed discussion of the subject matter. It is designed to present the data, information, and analyses that support the report's purpose. This segment typically includes multiple sub-sections or paragraphs, elaborating on the topics introduced, presenting evidence, and explaining findings in a clear and organized manner.

In contrast, the heading typically contains the title and author information but does not provide substantive content. The introduction serves to outline what the report is about and often includes the objectives or purpose, but it does not delve into the details. Lastly, the conclusion or summary wraps up the report by synthesizing the information and explaining the implications, but it does not provide all the detailed evidence. Therefore, the body is essential for conveying the complete and relevant details required for understanding the report's overall message.