Answer:
A) dilation,then reflection
Step-by-step explanation:
The size of figure 1 is bigger than the size of figure 2.
Changing the size of the figure is dilation.
So figure 1 is dilated to get figure 2.
Now figure 2 and figure 3 is in same size.
Figure 2 is reflected across y axis.
So the transformation is first Dilation and then reflection.
A) dilation,then reflection
