Answer
C.
Work Step by Step
At the start of the Cenozoic (C.), the continents had finished separating from Pangea, leading to geographic isolation. This is not true for A. or B., and since A. is wrong, so it D.
Biology (11th Edition)
by Raven, Peter; Johnson, George; Mason, Kenneth; Losos, Jonathan; Singer, Susan
Published by
McGraw-Hill Education
ISBN 10:
1259188132
ISBN 13:
978-1-25918-813-8
Chapter 26 - The Origin and Diversity of Life - Review Questions - Apply - Page 526: 4
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