The main reason why the author wrote the selection is most likely to -
This refers to the piece of writing which is written to inform, persuade, educate, entertain, criticize, etc and can be written with the aid of literary elements.
With this in mind, we can see that from the complete text, there is the narration of the National Spelling Bee competition and this selection was written to inform readers about the significance of Scripps National Spelling Bee.
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