To invoke File's Copy( ) method to make a copy of "source.txt", naming the new file "target.txt", you would write: File.Copy("source.txt", "target.txt"); because Copy is a static member of the File class.

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Copy is a static member of the File class, so it can be invoked using the class name rather than an instance of the class. Therefore, the correct syntax to invoke it would be File.Copy("source.txt", "target.txt");

To Invoke File's Copy( ) Method to Make a Copy