Answer: I would think loyalty.
Explanation:
From this excerpt, we can see that the theme depicted is (C) keeping up appearances in society. There is an indirect nod to theme in the first line "In reality it was just what is usually seen in the houses of people of moderate means who want to appear rich..."
It seems every individual wants to show that they are more affluent than they actually are, and in doing so they all purchase the same décor etc.
The speaker refers to Michelangelo to show how people pretend to be who they're not so they can fit in