What is one of the three key questions asked of individuals needing access to classified information?

One of the three key questions asked of individuals needing access to classified information is whether their allegiance is solely with the United States. This question is fundamental in the personnel security process because it assesses the individual’s loyalty and commitment to the nation. Ensuring that individuals who have access to sensitive information have an unwavering commitment to the U.S. is crucial for maintaining national security. A potential compromise in loyalty could lead to risks such as espionage or disclosure of classified information to foreign entities. Thus, this question serves as a vital determinant in evaluating an individual's trustworthiness and reliability in handling classified materials.

The other options, while relevant to security assessments, do not directly address the critical issue of allegiance, which is pivotal for safeguarding classified information.