What does RBAC stand for in Kubernetes?

Correct answer: Role-Based Access Control

Option D is correct because RBAC stands for Role-Based Access Control, which is the primary authorization mechanism in Kubernetes that grants permissions to users, service accounts, and groups based on roles bound to those subjects. Option A is incorrect because 'Request-Based Authorization Check' is not a real standard and does not correspond to any Kubernetes access control model. Option B is incorrect because 'Route-Based Access Configuration' conflates network routing concepts with authorization, and Kubernetes RBAC has nothing to do with routing. Option C is incorrect because 'Resource-Based Application Control' is a fabricated term that does not describe any recognized security model in Kubernetes or elsewhere.