Separation of duties
This scenario describes separation of duties—not allowing the same person to hold two roles that, when combined, are sensitive. While two-person control is a similar concept, it does not apply in this case because the scenario does not say that either action requires the concurrence of two users.
Alternate answers seen on other CBTs
The same question shows up worded slightly differently across CBT versions. Here are the other answer variants we've indexed.
The practice of requiring that processes should be divided between two or more individuals; no one person in an organization should have the ability to control or close down a security activity
12 Principles Of Information Security →Distributing tasks and associated privileges among multiple people, primary objective to prevent fraud and errors
Cissp Flashcards Pdf →A means of establishing checks and balances against the possibility that critical systems or procedures can be compromised by rogue use of access permissions. It includes least privilege, SOPs, shared authority, auditing, mandatory vacations, and other policies.
Comptia Certmaster Practice For Network+ →Prevents fraud by requiring more than one person to complete a critical process
Comptia Security+ Study Guide →When 2 or more employees split critical task functions
Legal And Privacy Issues In Information Security →