Which of the following is not the required field to describe Kubernetes objects?

`metadata` is a required field for all Kubernetes objects, containing information like name, labels, and annotations.

`apiVersion` is a required field that specifies the version of the Kubernetes API to which the object belongs.

`Kind` is a required field that specifies what kind of object is being created (e.g., Pod, Deployment, Service).

`Container` is a field defined *within* the `spec` section of a Pod object (or other workload resources) to describe the container to be run. It is not one of the top-level required fields for *all* Kubernetes objects, unlike `apiVersion`, `kind`, `metadata`, and `spec`.

`spec` is a required field for most Kubernetes objects, describing the desired state of the object.