Which of the following is MOST important for an organization to continuously manage after implementing...

In a Zero Trust model, access is never implicitly trusted and must be continuously verified — making privileged access review critical.

ISACA CRISC guidance:

“Under the Zero Trust model, continuous validation and review of privileged user access is essential to prevent privilege escalation and insider threats.”

Integration and segmentation are design concerns; privileged access management is the ongoing control requirement.

Thus, A is correct.

CRISC Reference: Domain 4 – Risk and Control Monitoring and Reporting, Topic: Zero Trust and Continuous Authorization.