Answer
The answer is B. This is a reflection across the y-axis.
Explanation:
If you look at each point on the ordinal figure, Its new point is the same distance away from the y-axis.
H was 2 units left from the y-axis and H' to 2 right units away from the y-axis.
I was 1 unit to the right of the y-axis and I' is 1 unit left of the y-axis.
J was 2 units left of the y-axis and J' Is 2 units right of the y-axis.
G was 5 units left of the y-axis and G' is 5 units to the right of the y-axis.