Answer:
C
Explanation:
the proportions all seem to stay the same, so while the second figure is smaller, all parts of the figures seem to follow the same scaling factor.
there are 8 isoceles triangle "rays" emanating from a central circle in both figures. so, also the main characteristics are the same.
the smaller figure appears rotated compared to the other.
so, it was rotated and then dilated (or vice versa, as the sequence of these 2 operations is irrelevant).