In order to use the result after a process node executes, what must you do?

To utilize the result from a process node after its execution, it is essential to save the value into a process variable. Process variables serve as temporary storage that retains the information produced during a process instance. By saving the result in a process variable, you enable subsequent nodes within the process to access and utilize that data, ensuring its availability for further processing, conditions, or outputs.

This approach is fundamental in Appian's process design, as it allows for a structured flow of information throughout the process model. The other choices, while related to data handling in Appian, do not facilitate the retention of results for ongoing use in the same way. For instance, storing results in a database may persist data, but it does not directly support the immediate usability of process outcomes within the process flow itself. Hence, using process variables is the preferred method for ensuring that results can be leveraged effectively throughout the process lifecycle.