TOEFL Listening: ETS-TOEFL听力机经 - YO2DAG4J12UH1396P$

How does the professor organize the lecture? A. She explains the value of redundant reproductive strategies, then she cites a series of examples found among violets. B. She describes several varieties of violets, then she explains how their reproductive adaptations differ. C. She compares a series of reproductive adaptations of violets with those of other flowering plants. D. She describes some reproductive adaptations of violets and speculates on how they evolved.