Answer :
Based on the level of access demanded, individuals holding security clearances are subject to periodic reinvestigations (PR) at a minimum of every five years for Top Secret, ten years for Secret, and fifteen years for Confidential.
What are considered to be Top Secret?
Top Secret refers to the greatest level of classification of a record on a national basis, disclosure of such record would cause exceptionally severe damage to national security if made publicly available.
Therefore, the correct answer is as given above.
learn more about top secret: https://brainly.com/question/27731827
#SPJ1