What is the primary objective of surveillance compared to undercover investigation?

The primary objective of surveillance is to observe behavior exclusively, which distinguishes it from undercover investigation. Surveillance is carried out to discreetly monitor the movements and actions of individuals over a period of time to gather information without direct interference. This method relies on observing patterns, activities, and potential illegal behaviors while maintaining a low profile to avoid detection.

Surveillance typically focuses on gathering evidence through visual or audio monitoring, tracking subjects as they go about their daily lives, and compiling data that can later be analyzed or presented in a legal context. This method does not involve direct interaction with the subject, making it distinct from other investigative techniques like undercover work, where the investigator actively engages with the suspect to elicit information or gather evidence.

The other options suggest actions that are outside the scope of traditional surveillance. For example, exposing and possibly detaining a suspect involves a more confrontational approach, interacting with the suspect implies engaging directly, and conducting in-person interviews suggests gathering information in a manner that is counter to the passive observation required in surveillance.