Customs and Border Protection Border Patrol Agent (CBP BPA) Practice Exam 2025 - Free Border Patrol Practice Questions and Study Guide

The role that specifically involves controlling entry and exit during an investigation is best represented by the seizing officer. This position is crucial during situations when evidence is being gathered, as the seizing officer has the responsibility to secure the perimeter and manage access points to ensure that the integrity of the investigation is maintained. By controlling who enters and exits the area, they can prevent tampering with evidence or interference with the investigation, thereby ensuring that all procedures are followed correctly and that the findings are legitimate and verifiable.

In contrast, the other roles have different focuses. For instance, the discovering officer usually identifies and initiates action upon discovering potential illegal activities but may not be directly involved in the control aspect. The investigative officer primarily focuses on collecting and analyzing information relevant to the case, while the field officer is often engaged in direct enforcement activities rather than managing the flow of personnel during an investigation. Thus, the seizing officer's role is distinct and vital for maintaining the security and integrity of the investigation environment.