ExplanationSamuel Huntington’s ideas are still passionately debated so they must be described as ideas that people are likely to disagree about. His opinions may well have been pedantic or hegemonic, but those words do not necessarily lead to disagreement.
The same goes for zealous, which, in addition, is also used to describe people, rather than their ideas. The correct answers are choices (C) and (E), since polemical means arguing passionately, and divisive means causing a disagreement.
Hence options C and E is correct!
_________________
SandyIf you found this post useful, please let me know by pressing the Kudos ButtonTry our free Online GRE Test