What function does a page break serve in document creation?

A page break primarily serves the function of starting a new page within a document. This allows for clear organization and separation of content, making it easier to manage layout and structure as the document grows. By inserting a page break, you can ensure that any subsequent text or elements begin on a new page, which is particularly useful when adding content later or ensuring that specific sections stand alone, such as chapters or distinct topics.

The choice related to dividing sections for better readability can be misconstrued in this context, as that can also be achieved through other formatting options, like paragraphs or section breaks. While formatting text into columns and adjusting margins are important aspects of document design, they do not pertain directly to the primary function of page breaks. Hence, the best answer focuses on the essential role of page breaks in establishing the physical layout of the document through page management.