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Question 9·Hard·Transitions

Ecologists have long assumed that the pollination success of alpine wildflowers would decline as warming temperatures shorten the period of snow cover. Recent field experiments support this assumption: earlier snowmelt correlates with fewer pollinator visits per flower. ______ these same experiments also report that certain late-blooming species compensate for reduced visits by producing significantly more flowers per plant.

Which choice completes the text with the most logical transition?