The existence of extensive archival data is probably least likely to be present in:

Question

Quizplus · Accepted Answer

Organized crime cases often have a secret and covert nature which makes it difficult to obtain archival data. The very nature of these organizations makes it unlikely for them to keep records of their activities. In contrast, state crime cases, governmental corruption cases, and corporate crime cases often involve official records that can be accessed through public archives or legal channels.

The Existence of Extensive Archival Data Is Probably Least Likely