In MS-Word, for what does ruler help?

The correct answer is All of the above because the ruler tool in Microsoft Word is a multi-functional layout utility used to manage multiple typographic alignments at once.

• Step 1 (Functionality): The horizontal and vertical rulers let users interact directly with document formatting. Clicking on the ruler inserts custom tab stops, sliding the markers adjusts first-line or hanging indents, and dragging the gray borders resizes page margins.


• Step 2 (Application): Note that the original options 'to set', 'to change', and 'All of the' have been cleaned up in this shortcode to reflect their full, proper wording ('to set indents', 'to change page margins', and 'All of the above') for a seamless user experience.


• Incorrect Options:
  
  
  
  • to set tabs is incorrect on its own because tab management is only one of several core layout features handled by the ruler.
  
  
  • to set indents is incorrect on its own because paragraph indents represent just a fraction of the ruler's formatting capabilities.
  
  
  • to change page margins is incorrect on its own because the ruler is equally responsible for handling tab stops and text indentation.