Answer:
2) reflection
Step-by-step explanation:
Let's list down the coordinates of the triangle ABC and the triangle A'B'C'
A = (0, -4)
B = (3, -4)
C = (3, 0)
A' = (-4, 0)
B' = (-4, 3)
C' = (0, 3)
Here the transformation is a reflection and (x, y) -----> (y, x)
So, the triangle ABC reflected over the line x = y and got the image of triangle A'B'C'
Therefore, the answer is 2) reflection
