The san andreas fault is a boundary where many earthquakes have occurred.

That is true that is a plate boundary that most earth quakes happen and most of them are low level earth quakes and very rarely are there big earth quakes

You not be doing this in a quiz. if you actually studied your work you would know the answer. the answer though is that they would use gdp per capita because it measures a smaller portion (person). this could show individual growth per person in the country.