Upward continuation of a potential-field (gravity) anomaly progressively smooths and attenuates sharp, near-surface anomalies, reducing amplitude contrasts across abrupt density boundaries like faults.
Point A sits over the low (down-thrown/lower-density) side, C over the high (up-thrown/higher-density) side, and B lies near the transition (fault trace) where the anomaly...
Full option-by-option analysis available to enrolled students.