What change can be made to modify the layout of a view in App Studio at run-time?

Changing the template used for the layout is the correct approach to modify the layout of a view in App Studio at run-time. Templates serve as the foundational structure for how data is presented within the application. By selecting a different template, you can alter the appearance and organization of the view without needing to rewrite the underlying logic or data management. This flexibility allows for quick updates to the user interface to enhance the user experience or respond to changing requirements.

Manipulating other options does not directly affect the layout at run-time. For example, altering the source of the data primarily impacts what content is displayed but does not change the layout's structure itself. Deleting the existing layout would remove the current view, which is not typically a desirable action and would not provide a modified view but rather eliminate it. Switching to a different application does not pertain to modifying a specific view's layout, as each application may have its own independent layouts that are not interchangeable at run-time within a single session.