Question

The figure ABCD is transformed to A'B'C'D', as shown:

Answer 1

Top points A and B are still top points A' and B', so the figure was not reflected across the x-axis. (That refelection reverses top and bottom.)

The figure is reversed left-to-right, so was reflected across the y-axis. The only viable choice is the 3rd one:

... Reflection about the y-axis followed by translation up by 5 units.