What type of appeal does the PSAB handle?

The PSAB, or Personnel Security Appeals Board, primarily deals with administrative appeals regarding personnel security clearance determinations. This board provides a venue for individuals who have been adversely affected by a decision regarding their security clearance status to challenge that decision based on administrative grounds. Such appeals typically relate to the findings of background investigations and the criteria used to assess an individual's eligibility for security clearance.

This focus on administrative appeals distinguishes it from criminal matters or policy-related issues, which do not fall under the purview of the PSAB. Additionally, financial appeals concerning clearance fees are not relevant to the board's functions. Hence, the correct characterization of the PSAB's role is that it handles appeals specifically related to security clearances, making the appropriate choice the correct answer.