Which preparation stage is responsible for retrieving data for rendering a screen?

The preparation stage that is responsible for retrieving data for rendering a screen is the Screen Preparation stage. This stage is crucial because it involves gathering and preparing the necessary data before the screen is displayed to the user. During this phase, the application fetches any relevant information from the database or external sources and populates it into data structures that will be used when rendering the user interface.

In the context of web applications, having a dedicated stage for data retrieval ensures that the screen is ready with all relevant information upfront, which facilitates a smoother user experience. Once the Screen Preparation is completed, the application moves on to render the screen with the retrieved data.

The other stages mentioned do not serve the same purpose: Screen Rendering is focused on presenting the data visually, Data Submission involves sending user inputs back to the server, and Screen Navigation manages transitions between different screens or views. Each of these stages plays a critical role in the application’s lifecycle, but only the Screen Preparation stage is specifically tasked with retrieving the necessary data for display.