What is created each time an action is added to a flow and holds the variables generated by the action?

The correct answer is that each time an action is added to a flow in ServiceNow Flow Designer, "Data Pills" are created.

Data Pills are the visual representations of the inputs and outputs that are generated by actions within a flow. They encapsulate the values or variables produced by actions, making it easier for the user to reference and use them in subsequent steps of the flow. Data Pills allow for seamless interaction within the Flow Designer, as they can be dragged and dropped into fields, making the flow dynamic and interactive.

Additionally, Data Pills provide clarity and organization within the flow, as they clearly indicate what data is being manipulated or utilized at any given stage of the process. This visualization supports better understanding and management of the data flow within the automation process.

The other options, while related to the context of Flow Designer, do not specifically refer to the objects that hold the variables generated by actions. Execution Details provide insights about the execution of a flow rather than holding variable data. The Data Panel refers to a workspace area where various elements of the flow are accessible but does not specifically denote the outputs of actions. Inputs and Outputs are concepts that describe what is required and what is returned in a flow but do not represent individual entities created by the actions themselves