If a mirror is placed on the line MN, then which of the answer figures is the right image of the given figure?

A vertical mirror is placed, so the object on the left will appear right in reverse position and vice-versa.

So the arrow pointing at top left in the middle will now face top right, thus the second and fourth options will be eliminated.

Also, in the question figure, the circle is inside he figure, so it will stay inside but its position will be reversed, hence third option is the right image.

=> Ans - (C)