Technically since it says in your own words, this is cheating, lets not cheat! finding the theme is simple, just ask yourself, what was the ppoint, its not asking you to summarize so dont say that this happened then this happened, nope just simply state the purpose of the article! hope i helped!
I think it's A
cause it's big and will not fit.
Customs, because it’s a way of doing just like tradition
I say "a circus elephant" because the information in the text clearly describe "a circus elephant."