Which directive automatically creates a new variable and assigns it the value of the JSON object returned?

The directive that automatically creates a new variable and assigns it the value of the JSON object returned is referred to as 'register.' In the context of automation frameworks like Ansible, the register directive is used to capture the output of a task and store it in a variable.

When a task is executed, and it returns a JSON response (such as when retrieving data from an API or running a script), using register allows you to define a variable that holds this output. This can then be utilized in subsequent tasks, enabling dynamic playbooks that adapt based on prior results. The registered variable can be referenced later in the playbook to access the data, making it a powerful tool for managing state and responses within automation workflows.

Other directives, while useful for different purposes (like configuring templates or debugging), do not return and store JSON object outputs in the same way as register does. In summary, register simplifies the handling of task results by allowing seamless access to the data returned by those tasks.