You are looking for an approximation, so you don't do any calculations. Instead, you can look at the scale factor between 4 and 16, and 2 and 8. It is 4, because 4 × 4 = 16 and 2 × 4 = 8. This means that we can say that the volume will also be multiplied by 4, and 50 × 4 = 200 cubic cm, which is option D. I hope this helps!
