Comprehensive and Detailed Explanation:

Creating an Application Properties page in ServiceNow provides a centralized interface where developers or administrators can configure settings that influence the application's behavior. This design offers flexibility, allowing modifications to how the application operates without the need to alter its underlying artifacts, such as scripts or workflows.

Option A: While Application Properties offer configurable settings, they do not serve to override properties inherited from ServiceNow. Instead, they provide a means to adjust application-specific configurations.

Option B: The primary purpose of an Application Properties page is not to change the application's appearance but to manage its functional settings. User interface modifications are typically handled through themes and UI policies.

Option C: Although an Application Properties page can serve as a landing page, its main benefit lies in offering configurable settings to adjust application behavior dynamically.

By utilizing an Application Properties page, developers and administrators can efficiently manage and update application configurations, promoting adaptability and ease of maintenance.