The correct option is They provide automated scaling self healing and coordinated rolling updates for pods.

Higher level controllers such as Deployments and StatefulSets manage ReplicaSets and they reconcile the desired state so they can automatically scale pods, replace failed pods, and perform coordinated rolling updates with controlled pod termination and startup to minimize disruption.

Deployments are the common choice for stateless workloads because they create and manage ReplicaSets for rolling updates and scaling. StatefulSets are used when pods need stable network identities or ordered deployment and updates.

GKE Autopilot is not an alternative controller. It is a GKE operating mode that manages cluster infrastructure and node configuration and it does not replace the need for controllers to manage pod lifecycles.

They guarantee that workloads will never experience downtime is incorrect because no controller can promise zero downtime. Rolling updates and proper probes reduce disruption, but you still need good configuration and architecture for high availability.

They update running container processes in place to apply new versions is incorrect because controllers typically create new pods with the updated images and then terminate the old pods. They do not patch processes inside an existing container in place.

Full AWS Practitioner Certification Question