Final answer:
For a simple GUI application, view and controller modules are often combined due to their collective role in handling user interactions, although in more complex applications, they are kept separate.
Step-by-step explanation:
In the MVC (Model-View-Controller) architecture, the view and controller modules are often combined for a simple GUI (Graphical User Interface) application. The reason for this is that the view is responsible for the presentation layer, which is the user interface that is presented to the end-users.
The controller handles the input from the user, processes it (possibly updating the model), and then decides the view to present. Therefore, in simpler applications, the view and controller can be closely tied together because they both deal directly with user interactions. However, in larger, more complex applications, keeping these modules separate is preferred for better maintainability, scalability, and testability.