Multiple choice general knowledge science & technology How to open Page Source? Ctrl+Y Ctrl+U Ctrl+I Ctrl+O Reveal answer Fill a bubble to check yourself B Correct answer Explanation Ctrl+U is the universal keyboard shortcut to view page source in most web browsers including Chrome, Firefox, and Edge. Ctrl+O opens a file dialog, Ctrl+I typically opens developer tools, and Ctrl+Y is for redo operations.