Are the Single Scope Background Investigation and the ANACI the only personnel security investigations approved for clearance eligibility?

The answer indicates that there are additional approved investigations beyond the Single Scope Background Investigation (SSBI) and the Access National Agency Check with Inquiries (ANACI). This is accurate because in the realm of personnel security, multiple types of background investigations are recognized for various levels of security clearance eligibility.

For instance, other investigations such as the Limited Background Investigation or the National Agency Check with Law and Credit (NACLC) are also approved for different purposes and security levels. These investigations vary in their scope and depth, and they are tailored to meet specific requirements depending on the sensitivity of the position and the level of access needed.

Thus, it is clear that while the SSBI and ANACI play significant roles, particularly for higher-level clearances, they are not the only investigations utilized within the security clearance framework. This broader selection allows for flexibility and appropriateness based on the individual's role within an organization, whether in the public or private sector.