To determine the transformation from triangle ABC to triangle A'B'C', we can analyze the positions of the triangles on the coordinate plane:
- Triangle ABC is located in quadrant 3, where both x and y coordinates are negative.
- Triangle A'B'C' is located in quadrant 4, where the x coordinates are positive and the y coordinates are negative.
The transformation from triangle ABC (in quadrant 3) to triangle A'B'C' (in quadrant 4) can be achieved by rotating the triangle 90° clockwise around the origin. A 90° clockwise rotation will move points from quadrant 3 to quadrant 4.
Therefore, the correct response is:
90° clockwise rotation about the origin.