Final answer:
The statement is true; format data changes using the Font dialog box apply only to the text that has been selected.
Step-by-step explanation:
The statement that if you format data using the Font dialog box, the changes apply only to the data you have specifically selected is true.
When you are working with text in various applications, such as word processors or spreadsheet programs, you typically have the ability to format the font of your text to change its appearance. However, these changes are confined to the text you have highlighted or selected before applying the format. You can change the font type, size, color, and other attributes of the text, but these changes will not affect any unselected data unless you apply the formatting to larger parts of your document or sheet.