Which feature enables you to preview headers and footers

Print layout.

Explanation:

'Print layout' is the feature that primarily assists the user to show a print view of the document in a page-layout format. It allows them to preview the format and page break of the document along with the header (text that appears on the top of a page) and footer (text to be appeared at the bottom of a page) on each page. This feature assists the user to ensure that their intended visual elements, page or paragraph breaks, spacing, etc. have exactly taken place in print format as desired or decide if any changes are required. Thus, 'print layout' is the answer.