The argument says Neanderthal could speak because they have X. Since, humans have X and use them to speak, Neanderthal also should have spoken.
A. Most animals have eyes. Thus, the new species of fish just discovered must have eyes. - does not match with the pattern.
B. People are able to live in most climates on earth. The discovery of a skeleton in the Arctic indicates that some people are not able to live in all climates. - does not match.
C. //Cattle have four chambered stomachs that allow them to eat hard to digest plant fibers.//(it is like humans have X which allows them to speak.) //This recently discovered mammal has a four chambered stomach, so it must eat plant fibers.//( It is like Neanderthal also have X, so they must have used it to speak). - looks good.
D. Plants use photosynthesis to manufacture food by absorbing the light of the sun. Therefore, any plant that has existed uses photosynthesis to ((eat.)) - incorrect.
E. No snakes have legs. Because the bones discovered by scientists have legs, they are not the bones of a snake. - incorrect.
Thus, C is best.
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