The signature of a method includes its method name, return type, and arguments or parameters. Hence, the correct answer is 'All of the above'.
The signature of a method consists of several components that uniquely identify it within its class or context. These components include the method name, which is used to call the method, the return type, which specifies what type of data the method will return if any, and the arguments or parameters, which are the variables passed into the method to influence its execution or to work with provided data. Therefore, when considering which elements form part of a method's signature, the answer is d) All of the above.