.Darwinwasnotthefirsttoadvanceatheoryofevolution;histremendousoriginalitylayinthefactthatheproposedtheideaofnaturalselectionasthemeansbywhichevolutionworked.
byGemjhttp://www.chasedream.com/（）
(A)layinthefactthatheproposedtheidea
(B)layinthefactofhisproposingtheidea
(C)laidinthefactofhisproposingtheidea
(D)laidinhisproposal
(E)layinhisproposal