I believe all of the anwers apply.
The 'fewer natural resources" is applicable assuming they are currently depleting their natural resources.
C. be a social contract between citizens and their leaders.
The most important thing that the designers should take into account are the potential earthquakes - the buildings should be able to withstand the shaking of the ground.
Additionally, Earthquakes often lead to fires, so the buildings should also be fire-proof; especially not made of wood.
Finally, the possibility of a tsunami should be considered.
