SSC CHSL 24 Mar 2018 Shift 2 Paper

A vertical mirror is placed, so the object on the left will appear right in reverse position and vice-versa.
So the diagonal originating from top left will now appear at top right, thus the second and last options will be eliminated.
Also, in the question figure, the rhombus at bottom left will appear at bottom right side, hence third option is the right image.