To rank the earthquake risk of the cities listed:
- San Francisco, CA - Located near the San Andreas Fault, San Francisco is highly prone to earthquakes.
- Little Rock, AR - While not as high risk as San Francisco, it does experience seismic activity, particularly from the New Madrid Seismic Zone.
- New Orleans, LA - This city has minimal earthquake risk compared to San Francisco and Little Rock, but it is not completely free from it.
- Miami, FL - The lowest earthquake risk among these cities, as it is located far from major fault lines.
Based on this information, the correct ranking of earthquake risks from high risk to low risk is:
C: San Francisco, CA, Little Rock, AR, Miami, FL, New Orleans, LA.