Final answer:
Change control is the program that ensures documented approval for altering an application, which is a part of Configuration Management.
Step-by-step explanation:
The program that assures there is documented approval for altering an application is known as change control. Change control is a component of the overall discipline of Configuration Management, which refers to the structured process of managing changes to the IT system or the application. The purpose of change control is to ensure that all changes are documented, reviewed, and approved before they are implemented, which helps in maintaining the integrity and consistency of the system throughout its lifecycle.