Which one of the following expresses the central idea of this selection?

Which one of the following expresses the central idea of this selection?
A No amount of scientific evidence will prevent some people from believing illogical theories about the earth.
B The scientific community wastes valuable time trying to put an end to alternative theories about the earth.
C Law enforcement needs to be more aware of artists who exploit crackpot theories to make money.
D It is reckless for people like Ray Palmer to promote wacky ideas like the “Detrimental Deros” theory.