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.
Well since a hundred board should go by 10's until you reach 100, start at 61 then go up 10 spaces and the answer is 71
Hope this helps
~Jordan~
D. none of the above i only commented for the points
Can you post a pic so i can answer?