Answer:
The correct answer is: Number "3" (PGDN).
Explanation:
The numeric pad of the keyboard has additional functions besides typing the digits printed on it. After pressing the "NumLock" and letting its light go off, some numbers will have direction functions. Number "9" is useful to scroll pages up and number "3" scrolls the page down. Besides, number "8", "2", "4", and "6" move pages up, down, left, and right.
