Resiliency is a quality in objects to hold or recover their shape, or in people to stay intact. This is a kind of strength. If you bend a fork and it bends right back — that's resiliency. A car that is in an accident only has a few scratches has resiliency: it holds up and keeps its shape.
I believe the answer is: d. the shell and the skeleton
The shell and skeleton in architecture would act as the main foundation that support the weight of the whole building. The strength of shell skeleton would determine whether the building would collapse during natural disaster such as earthquakes.
B. development of new markets
I believe the answer is: Appeal to emotion
Appeal to emotion is a form of rethoric that is aimed to manipulate the audience's feeling in order to win an argument.
In general, an appeal to emotion usually have a stronger impact in the absence of factual data/evidence.<span />