What are the two basic parts that make up a report?

The correct choice identifies the two fundamental components of a report: the summary page and the narrative. In report writing, the summary page typically serves to provide an overview of the report's contents, highlighting key points and findings for quick reference. This allows readers to quickly grasp the essential aspects without delving into the entire document.

The narrative, on the other hand, contains the detailed information and analysis that supports the findings. It is where the evidence, observations, and reasoning are elaborated upon. This structure is critical for ensuring that the report is both informative and comprehensible, enabling readers to follow the thought process behind the conclusions drawn.

The other options do not represent the standard structure commonly found in reports. While summaries can be part of an introduction or conclusion, they do not effectively capture the essential format required for clarity and thoroughness in a report. Therefore, understanding these two basic components aids in producing effective and functional reports in law enforcement and other fields.