What is conducted at 10-year and 15-year intervals to maintain access to classified information?

The correct answer is associated with routine security measures mandated for personnel who have access to classified information. The National Agency Check with Law and Credit (NACLC) is specifically designed to evaluate the suitability of individuals for access to classified information. Conducted at 10-year and 15-year intervals, it plays a crucial role in ensuring that individuals remain trustworthy over time.

The NACLC focuses on various aspects such as employment history, criminal records, and any financial issues that may suggest a potential for coercion or compromise. Regular intervals for these checks help in reassessing the individual’s eligibility and address any changes in circumstances that may influence their reliability with respect to handling classified materials.

The other options indicate different types of investigations or examinations that have varying frequencies and purposes. For instance, a polygraph examination is generally used in specific contexts rather than being a routine interval check, while SSBI-PR (Single Scope Background Investigation-Periodic Reinvestigation) is related but typically refers to a different standard and procedure. Background investigation, in a broader sense, is an umbrella term that may include processes like NACLC but does not specifically refer to the continuous evaluation system as directly as NACLC does.