The answer may be B, but i may be incorrect.
The only solution to this problem is to say that the per capita GDP is higher for citizens in Chile than Brazil.
It makes sense cause the higher the capita the higher the growth rate is.
Changes from building houses to withstand either tsunamis or hurricanes. From changes to the local economy and how the food grows and what needs to be strengthen to adapt to the noticeable weather change. Also from the changes of local and current laws and or codes of laws.