What displays the current page number, total pages, number of words, and errors in a document?

The status bar is the correct answer because it provides real-time information about the document you're working on. Specifically, it typically displays the current page number, the total number of pages, the word count, and any spelling or grammatical errors detected in the text. These features help users keep track of their progress and ensure the quality of their writing without needing to navigate away from the document.

In contrast, tooltips are brief informational messages that appear when a user hovers over an element, providing context or additional information about that element but not general statistics about the document itself. The header and footer sections of a document are used for page numbering, titles, and other static information throughout the document but do not provide dynamic updates on current page status or errors. The document outline is primarily a navigational tool that provides a structured view of the document's headings and subheadings, useful for organization but not for displaying the aforementioned statistics.