One quarter of the figure below is missing. Which option completes the figure?

Answer & explanation
Correct answer: option 2
The correct answer is Option (2) →
The figure is symmetric about both the vertical and the horizontal lines through its centre: each quarter is the mirror image of the quarter beside it. So the missing bottom-left quarter is the mirror image of the bottom-right quarter across the vertical line.

Why the other options are incorrect
Option (1) — Incorrect. This is the correct piece turned upside down (flipped top to bottom).
Option (3) — Incorrect. This is the correct piece turned through 90° clockwise.
Option (4) — Incorrect. The dot of the correct piece is missing.