Paleontologists have discovered fossils of centipedes that are 414 million years old. These fossils are at least 20 million years older than the earliest land-dwelling animals previously identified. The paleontologists are confident that these centipedes lived on land, even though the fossilized centipedes were discovered in rock that also contained fossilized remains of animals known to be water-dwelling.
The paleontologists' view would be LEAST supported by the truth of which one of the following?
(A) The legs of the fossilized centipedes were particularly suited to being a means of locomotion on land. --
This says they were built to be on land, which supports our conclusion(B) All of the centipedes that had previously been discovered were land dwellers. --
This, again, supports out conclusion based on history
(C) The rock in which the fossilized centipedes were found was formed from mud flats that were occasionally covered by river water. --
This says that fish fossils could have been placed with our creature well after our creature had already been fossilized. Therefore, this supports our conclusion(D) Fossils of the earliest land-dwelling animals that had previously been identified were found in rock that did not contain fossilized remains of water-dwelling animals. --
So no other water-dwelling animals were found with other land-dwelling animals. This doesn't 100% weaken our conclusion, but it certainly doesn't support it. This is our answer(E) Fossils of spiders with respiratory systems adapted only to breathing air were found in the same rock as the centipede fossils. --
This says that air-breathing species were found with our creature. This would support the idea, albeit not well, that our creature was land-dwelling, too. Thus, this supports or conclusion
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44% (02:08) correct 
