When you approach a restricted facility, you are requested for identification and verified against a pre-approved list by the guard at the front gate before being let in. This is an example of checking for the principle of

A.
Least privilege

B.
Separation of duties

C.
Fail-safe

D.
Psychological acceptability

Explanation:
A: Access to facilities should be limited to named individuals with a requirement for physical access following the principle of least privilege. Individuals who do not require frequent physical access to physical systems should not receive access to the facility. If occasional access is required, then temporary access should be granted and revoked when it is no longer required. It is recommended that you are familiar with the other principles mentioned. Page 552.