The diagram below represents a section of undisturbed layers of sedimentary rock in New York Sta...

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The diagram below represents a section of undisturbed layers of sedimentary rock in New York State and shows the location of fossils of several closely related species. According to currently accepted evolutionary theory, which is the most probable assumption about species \( A, B \), and \( C \) ?
(a) Species \( B \) is more abundant than species \( C \).
(b) Species \( C \) existed before species \( B \).
(c) Species A and B are genetically identical.
(d) Species B descended from species A.
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