Assigns and schedules Pods across the cluster nodes is the correct answer.

Scheduling is performed by the kube-scheduler which runs in the control plane. The kubelet runs on each worker node and implements the scheduler's decisions by creating, monitoring, and reporting pod and container status. The kubelet does not assign pods across the cluster.

Aggregates and exposes container logs for troubleshooting is incorrect because the kubelet does not perform cluster wide log aggregation. The kubelet and container runtimes provide per node access to container logs and commands like kubectl logs can retrieve those logs, but centralized aggregation and exposure is handled by a logging agent or external system.

Retrieves container images from registries and provides them to the runtime is incorrect because the kubelet is responsible for ensuring images are available on the node. The kubelet uses the container runtime interface to instruct the runtime to pull images from registries so the runtime can run containers.

Instructs the container runtime to start and stop container instances is incorrect because the kubelet directly interacts with the container runtime to create, start, stop, and manage container lifecycles on the node. Managing container lifecycle is a core kubelet responsibility.

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