The system of government by privileged citizens or the upper class is called:
socialism
autocracy
aristocracy
democracy

I believe the answer is: aristocracy

These privileged citizens obtained their positions through blood line rather than their individual efforts, which make a select few of people destined to be nobles without having any accomplishment. This is the type of government that exist in France prior to the French revolution.

the three roles stated in the dialogue develop the siblings' personalities.

lloyd's personality looks like a trademarketer

dana's personality is afraid from lloyd's behavior and the oldest sister is a decided person who tries to solve any conflict