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.
Reference: IIA IT Controls - Application Security & Data Integrity