In windows, SHIFT, CTRL (control), and ALT (alternate) keys are called ___________.

The correct answer is option 4 i.e Modifier keys.

• Special keys
  • A special key or media key is a keyboard key that performs a special function not included with the traditional 104-key keyboard.
  • For e.g,  the first four buttons are shown to control the volume of the speakers and the computer's brightness.
• Lock keys
  • These keys are related to the lock part of a keyboard keys for a distinct mode of operation, depending on the lock settings selected.
    • Number Lock: It allows the user to type numbers by pressing the keys on the number pad, rather than having them act as up, down, left, right, page up, end, and so forth.
    • Capital Lock: It is used to type the letters in uppercase by default rather than lowercase. Located at the left end of the keyboard, above the left shift key.
    • Scrolling Lock: In some applications, such as spreadsheets, the lock mode is used to change the behaviour of the cursor keys to scroll the document instead of the cursor.
• Window keys
  • The Windows logo key such as win, start, logo, flag, or super key.
  • This key became a standard key on PC keyboards.
  • In Windows tapping the key brings up the start menu.
  • Ctrl + Esc performs the same function, in case the keyboard lacks this key.
• Modifier keys
  • It is a special key on a computer keyboard that temporarily modifies the normal action of another key when pressed together.
  • For e.g, Shift, Alt, or Ctrl keys are the modifier keys. Hence option 4 is correct.