What are the load behavior choices for menus in a mash-up application?

The load behavior choices for menus in a mash-up application are vital for optimizing user experience and system performance. The correct option emphasizes three specific states: at screen load, on first use, and refresh on display.

When a menu's data is loaded at screen load, it ensures that relevant information is available immediately when the user accesses the screen, providing a seamless experience without unnecessary delays. Loading on first use allows for efficient resource management, where data is only retrieved when the user engages with that particular menu item for the first time. This is particularly useful in applications that may have numerous or complex menus, keeping initial load times minimal. The refresh on display feature is critical as it allows the menu data to stay current without requiring the user to leave or reload the screen, keeping the interaction dynamic.

Other options describe load behaviors that do not align with standard practices in mash-up applications. For example, loading during navigation or on submission does not cater to a straightforward user experience, as these actions may add delays or interruptions when interacting with the menus. These other methods can lead to a less responsive application, which could frustrate users, making option A the most effective choice for ensuring menus are appropriately loaded for optimal performance.