Which transformation changes triangle abc to triangle a'b'c'?

Hello!

To get ABC and A’B’C’, a reflection would not work, as both reflections would cause the figure to be facing a different direction regardless the translations.

A 90 degree rotation would cause the figure to end up in Quadrant III, not II.

A 180 degree rotation would put the figure in the quadrant diagonal from it. This puts it in Quadrant II, and this makes it the only answer that would work.

The answer is D) 189 degree rotation counterclockwise about the origin.

I hope this helps!