Answer:
Option A.
Step-by-step explanation:
The graph below shows the transformation from triangle 1 to triangle 2 as below.
1). To understand the transformation we will take a point A. Present coordinates of point A are (1, -1).
When point A is reflected across y - axis, coordinates of A' become (1, 1).
2). Now we see that triangle 2 is in 3rd quadrant having coordinates A"(-1, -1)
which reveals that A'(1, 1) has been rotated by 180° counterclockwise.
Therefore, option A. is the correct choice.
