Shortcut key to Align the selected text or line to justify the screen.

Ctrl + J is the keyboard shortcut to fully justify text in Microsoft Word, making both left and right edges aligned by adjusting word spacing. This creates clean, block-like paragraphs commonly used in formal documents. Option B (Ctrl + R) is not a standard alignment shortcut in Word. Option C (Ctrl + T) is for hanging indents. Option D (Ctrl + Shift + F) opens the font dialog box. Justified text is distinct from left, center, or right alignment.