What length of time is associated with the "Secret" clearance level?

The "Secret" clearance level is associated with a periodic reinvestigation cycle of 10 years. This means that individuals holding a Secret clearance must undergo a review process every 10 years to ensure they continue to meet the requirements for access to classified information. This period is designed to maintain the integrity of those who have access to sensitive material, considering potential changes in personal circumstances that could affect an individual's eligibility for such clearance.

The other options reflect timelines that apply to different types of clearances or are not aligned with the established protocols for the Secret level. Understanding the specific timelines for various clearance levels is essential for compliance and security management within organizations that handle classified information.