Which section of a report includes observations and actions taken by the officer?

The investigation section of a report is where the officer details their observations and actions taken during the course of their investigation. This part is critical as it provides a comprehensive account of what the officer witnessed, any evidence they collected, and any steps they took in response to the situation. It serves to document the facts of the case and presents a narrative of the events as they unfolded. This section may also include details such as the condition of the scene, interactions with individuals involved, and any relevant contextual information that aids in understanding the case as a whole. In contrast, the introduction typically sets the stage for the report, the conclusion summarizes findings, and interviews focus narrowly on discussions with individuals. Therefore, the investigation section is the most appropriate choice for including the officer's firsthand observations and actions.