Which of the following refers to the trust and reliability of an individual in security investigations?

The correct answer is background check. This term specifically refers to the process of investigating an individual's personal, professional, financial, and criminal history to determine their trustworthiness and reliability in the context of security investigations.

A background check typically collects various data points, such as employment history, education verification, criminal records, and sometimes credit history. This comprehensive look into a person’s past is essential for evaluating their suitability for roles that demand high levels of trust and security clearance. It serves as a critical tool in ensuring that individuals placed in sensitive positions do not pose a risk to the organization or its operations.

While character assessment and behavioral evaluation are important aspects of understanding an individual's qualities, they are often more subjective and less formalized than a background check. Report submission is a procedural step that may follow these evaluations but does not directly relate to assessing trust and reliability on its own.