Respuesta :
The easiest way for Katie to apply styles to titles and headings in a document that she has created is to use the quick styles gallery.
What is a Quick Styles gallery?
In a Word application, the Quick Styles gallery is used to provides a useful one-click method of applying a style.
Hence, the easiest way for Katie to apply styles to titles and headings is to use the quick styles gallery.
Therefore, the Option C is correct.
Read more about Quick Styles gallery
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