Answer
(c) It can include comparisons of fossils as well as DNA sequences.
Work Step by Step
One can observe physical differences between fossils, as well as differences between sequences of DNA.
Campbell Biology: Concepts & Connections (9th Edition)
by Taylor, Martha R.; Simon, Eric J.; Dickey, Jean L.; Hogan, Kelly A.; Reece, Jane B.
Published by
Pearson
ISBN 10:
0-13429-601-X
ISBN 13:
978-0-13429-601-2
Chapter 1 - Review - Page 18: 7
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