Hmm... #4 says it's an enlargement, but it appears to be a reduction, with the scale factor being 1/2. Anyway, due to Thanksgiving break, brain is on sleep mode.
I plugged it in to GeoGebra, and the ordered pairs were for the polygon were:
A2 = (0, 0.5) (0.5,0.5) (0.5, 1) (0, 1.5)
#2 looks OK to me.