Themselves, that’s the answer I believe.
A biography of george washington :)
C is the right one. Unlike quotations or paraphrased ideas, information that's considered "common knowledge" doesn't need to be cited. "Common knowledge" is information that's considered widely known or easily verified.
I would say its D because it rhymed best to me like seeming (a) then appear(b) esteeming(a) where(b) spring (a) and d is only with ababa
