Mastering Java: The Ultimate 2026 All-In-One Quiz to Excel in 'Thinking in Java

To add a button to a frame using BorderLayout, you must specify the region in the add() method. Option A is incorrect because the add() method requires a second argument to specify the position in the BorderLayout. Option C is also incorrect because although setLayout() is necessary to use BorderLayout, it is not enough on its own to add a button. Option D is incorrect as buttons can be added using BorderLayout by specifying the region in the add() method.