Branches on the evolutionary tree are sometimes rearranged by scientists because

Question

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As new fossils are discovered or more information is obtained about existing fossils, the relationships between species may need to be revised. This can lead to branches on the evolutionary tree being rearranged to reflect the updated understanding of relationships. Option B is incorrect because unrelated fossils would not be added to the same tree as existing fossils. Option C is incorrect as scientists do not try to prove nonexistent relationships. Option D is partially correct, as proven relationships between species may lead to rearrangement of the evolutionary tree, but this option does not account for the possibility of new information changing previous understandings of relationships.

Branches on the Evolutionary Tree Are Sometimes Rearranged by Scientists