thE pAssAgE is primArily ConCErnED with
A．prEsEnting An ArgumEnt to support A pArtiCulAr hypothEsis
B．suggEsting An AnswEr to A thEorEtiCAl quEstion
C．quEstioning thE Assumptions oF A rEsEArCh projECt
D．CritiCizing ExpErimEntAl rEsults
E．(E) ExplAining thE origin oF CErtAin sCiEntiFiC DAtA