Comprehensive and Detailed In-Depth Explanation:

Application controls are specific to software applications and help ensure data integrity and accuracy within systems.

Option A (Automated password change requirements) – A system security control, not specific to a single application.

Option B (System data backup) – A general IT control, not an application control.

Option C (User testing of system changes) – Part of software development controls, not an application-level control.

Formatted data fields ensure that users enter information in the correct format, preventing errors and improving data accuracy.

Since formatted data fields are an application-specific control, Option D is correct.