Final answer:
The correct answer from the given options is a) Expand Font, which increases text size to the next established size. Option A is correct.
Step-by-step explanation:
The button that increases the size of text to the next established size is known as the Grow Font button in many word processing programs like Microsoft Word. However, the options given to choose from do not include 'Grow Font'.
The correct answer to the question from the options provided would likely be option a) Expand Font. This feature is often found in the font or home section of the ribbon in word processing software. When you click on 'Expand Font', it increases the text size in set increments based on preset font sizes.
Different software may label this button with different names, but its function is generally to make the text larger for better readability or emphasis. In some other applications or contexts, it might be referred to as 'Increase Font Size' or a similar variation.
This feature can usually be found in the font or home section of the ribbon in word processing software such as Microsoft Word.