Question from the Android test

to indicate that the method is theoretically called from a thread that is not the main thread and that it is not appropriate to manipulate the application's graphical interface within it

allows the code of the method to be executed in a detached thread managed by the system, which makes it possible to not complicate its code via the use of the methods Thread.start() or AsyncTask.execute()

to indicate that the method will perform a complex task that requires the system to allocate more memory so that everything goes as well as possible

to indicate that only one and only one Thread whose type would be “Worker” can call this method