How do you change the font size in Word?

The correct method to change the font size in Word is by selecting the text and adjusting the size in the Font group located in the Home tab. This allows users to easily modify the appearance of their text. The Font group provides a straightforward interface where one can choose various font sizes from a dropdown menu or enter a specific size manually, which makes it quick and efficient for formatting documents.

The other options listed are not standard practices in Microsoft Word. The View tab typically focuses on document display options rather than text formatting, and there is no option within that tab specifically designed for adjusting font size. Using the Layout options pertains more to overall document layout and spacing rather than direct text formatting, making it an inappropriate choice for changing font size. Running a style rule generally involves applying predefined formatting styles, which can influence text size but does not directly address the need for immediate changes to font size on a selected text.