Answer
D.
Work Step by Step
All of A.-C. are needed for natural selection to occur: heritable (C.) genetic variation (A.) leading to differential reproductive success (B.). Thus, D. is the best answer.
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 20 - Genes Within Populations - Review Questions - Understand - Page 419: 7
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