Onomatopeias imitate sounds, such as "BOOM!" "BZZZZ" (like a bee)
Character is the people or animals in a story and a setting is the time and a place where a story happens .
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.
