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## Answers

1. If you have many options, a set of radio buttons takes up a large area. A combo box can show many options without using up much space. But the user cannot see the options as easily.
2. When any of the component settings is changed, the program simply queries all of them and updates the label.
3. To keep it from growing too large. It would have grown to the same width and height as the two panels below it.

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