The correct answer is Pod.

Pod is the smallest and simplest Kubernetes object that an administrator can create and manage to run containerized applications. A Pod can contain one or more containers that share the same network namespace and storage and it is the unit that the scheduler places onto a node.

Node is a worker machine in the cluster that hosts Pods and it is not the minimal deployable unit. You do not create a Node to run containers in the same way you create a Pod.

API server is a control plane component that exposes the Kubernetes API and it validates and processes object definitions. It is not an object you deploy to run application containers.

Kubelet is the agent that runs on each node and ensures that containers described in a Pod are running. It is an operational component and not the deployable resource you create for your workload.

Full AWS Practitioner Certification Question