Shortcut to justify a paragraph:

Text alignment is a basic yet powerful formatting tool in word processing, allowing users to control how text appears relative to the page margins. The question asks for the shortcut to justify a paragraph.

• Ctrl + J is the correct answer. In most word processing applications, including Microsoft Word, 'Ctrl + J' is the keyboard shortcut for 'Justify' alignment. This command aligns text evenly along both the left and right margins, creating a clean, block-like appearance, often used in newspapers and books.
• Ctrl + E is incorrect. This shortcut is used to 'Center' the selected text or paragraph, aligning it equidistant from the left and right margins.
• Ctrl + R is incorrect. This shortcut is used to 'Right-align' the selected text or paragraph, aligning it along the right margin while leaving the left margin ragged.
• Ctrl + U is incorrect. This shortcut is used to 'Underline' the selected text.

Mastering these alignment shortcuts significantly speeds up document formatting and enhances productivity in word processing tasks.