What type of surveillance combines elements of both close and loose approaches?

The combination of both close and loose surveillance is best defined as Combined Close and Loose Surveillance. This method allows an investigator to adapt their approach based on the situation and objectives. Close surveillance involves maintaining a fixed and focused observation on a subject to gather detailed information about their activities, while loose surveillance provides a broader and less intrusive observation that may not require constant attention.

By integrating both techniques, Combined Close and Loose Surveillance allows for adaptability in the level of observation, making it effective in situations where monitoring a subject's movements might fluctuate between needing intimate details and a more general overview. This versatility can provide investigators with a comprehensive understanding of a subject's behavior, enhancing the overall effectiveness of the surveillance operation.