Final answer:
For media categorized as high-security that will be reused and stay within an organization's control, NIST Guidelines recommend clearing the data to make it unrecoverable by standard techniques.
Step-by-step explanation:
In the NIST Guidelines for Media Sanitation, if the security categorization is high and the media will be reused AND is not leaving the organization's control, it should be cleared. This means that the data on the media should be made unrecoverable to standard recovery techniques yet it doesn't need to meet the standards of destruction since it's not leaving the organization. Clearing is a level of media sanitation sufficient for a high categorization that assures the protection of sensitive information for reuse in a secure environment.