What key document must be reviewed to assess an employee's national security position?

The correct document to review for assessing an employee's national security position is the SF 86, Questionnaire for National Security Positions. This form is specifically designed to collect detailed information needed for the evaluation of individuals holding or seeking positions that involve access to classified information or national security duties.

The SF 86 includes a comprehensive series of questions that delve into an applicant's background, including their citizenship, criminal history, financial responsibility, and foreign contacts. The information gathered is used by security agencies to evaluate the individual’s trustworthiness and reliability, which are critical for ensuring national security.

This document is vital because it not only helps in determining eligibility for a security clearance but also serves to inform ongoing security assessments of individuals in sensitive national security roles. In contrast, the other documents listed do not specifically pertain to the same level of security assessment required for national security positions.