Which keyboard shortcut centers the current line in a document?

The keyboard shortcut that centers the current line in a document is Ctrl+E. This command is commonly used in word processing programs like Microsoft Word to quickly align the text in the center of the page or the current paragraph.

Centering text can be particularly useful for titles, headings, or any content that you want to emphasize in a document, making it visually distinct from left-aligned text. By using the Ctrl+E shortcut, you can efficiently adjust alignment without having to navigate through menus or use the mouse, thus enhancing productivity when editing documents.

The other choices relate to different text alignments or functions: Ctrl+C is used to copy selected text, Ctrl+L aligns text to the left, and Ctrl+R aligns text to the right.