Final answer:
The function to split a multi-page document into individual files is 'Extract Pages', typically found in PDF editing software.
Step-by-step explanation:
The function that allows you to break apart a multi-page document into individual documents is B) Extract Pages. This feature is commonly found in PDF editing software, enabling users to select specific pages from a document and create new, separate files from those pages. This functionality can be extremely useful when you want to share or save only certain parts of a larger document.
The function that allows you to break apart a multi-page document into individual documents is Extract Pages. This function is commonly found in document editing software such as Adobe Acrobat. By selecting the desired range of pages, the software will create a new document containing only those pages.