Final answer:
The 1994 Northridge earthquake differed from the 1971 San Fernando earthquake in magnitude, death toll, and faulting type, marking answer D as the correct choice.
Step-by-step explanation:
The student question pertains to distinguishing the similarities and differences between the 1994 Northridge earthquake and the 1971 San Fernando earthquake. Although both earthquakes occurred in the same general region, they had different characteristics. The correct answer reflects that these seismic events had different magnitudes, death tolls, and types of faulting involved.
The answer is: D) They had different magnitudes, casualties, and faulting.
Comparing the impact of earthquakes helps to understand the complex nature of seismic hazards and their consequences on society and the environment within various geographical regions.