Answer:
The correct answer is enlargement scale factor of 1.5.
Explanation:
the reason for this is that if you divide the D' numbers by the D numbers you get 1.5
so 8×1.5=12
6×1.5=9
any scale factor 0-1 is a reduction. Greater than 1 (like this case here) is an enlargement. as you can see the after image D' is bigger than the pre image D
I hope this helps :)