Which of the following shortcut keys is used to close a tab on a browser:

• (A) Ctrl+X
• (B) Ctrl+W
• (C) Alt+F4
• (D) Shift+F4

The shortcut key to close a tab on most browsers is: (B) Ctrl+W.

Here’s a breakdown of the other options:

• Ctrl+X: This shortcut is typically used to cut selected text or objects, not to close tabs.
• Alt+F4: This shortcut often closes the entire application window, not just a specific tab.
• Shift+F4: Similar to Alt+F4, this shortcut might close the entire browser window depending on the program settings.