Critical Reading>Sentence Completions
Choose the word or set of words that, when inserted in the sentence, best fits the meaning of the sentence as a whole.
Barbara McClintock's systematic examination of corn demonstrated the transposition of genes, a finding that overturned entrenched beliefs and proved that ------- study may produce brilliant insights and ------- change.
(A) haphazard . . radical
(B) inherent . . controversial
(C) improvised . . startling
(D) methodical . . revolutionary
(E) derivative . . gradual