Which of the following is not a valid way to add a reader or writer to your workspace?

• A. Double-clicking the Navigator window
• B. Dragging and dropping a file onto the canvas
• C. Readers > Add Reader or Writers > Add Writer
• D. Quick Add

Answer: (A)

In FME Workbench, you add readers or writers by creating them directly on the canvas or through explicit menu actions, not by double-clicking the Navigator. Dragging a data file onto the canvas automatically creates a reader for that file type, providing a quick way to initialize the data source. The menus offer precise options to add a reader or writer and configure its settings, while Quick Add lets you type and insert a specific reader or writer quickly. Double-clicking the Navigator window doesn’t instantiate a new reader or writer; the Navigator is for browsing and managing existing workspace components. Therefore, this action isn’t a valid way to add a reader or writer.