GMAT Sentence Correction (SC) | Re: QOTD: For many revisionist historians, Christopher Columbus

For many revisionist historians, Christopher Columbus has come to personifydevastation and enslavement in the name of progress that has decimated native peoples of the Western Hemisphere.

a) devastation and enslavement in the name of progress that has decimated native peoples of the Western Hemisphere
b) devastation and enslavement in the name of progress by which native peoples of the Western Hemisphere have been decimated
c) devastating and enslaving in the name of progress those native peoples