Final answer:
The false statement is that you use an append statement to access a Java class in a package; the correct term is an import statement.
Step-by-step explanation:
The false statement is b. You use an import statement, not an append statement, when you want to access a built-in Java class that is contained in a group of classes called a package. A dialog box (a) indeed is a GUI object that can display messages. It's also true that different methods (c) can require different numbers of arguments.