This statement is a premise that counters the misconception that humans evolved from chimpanzees. It supports the author’s argument that because humans and chimpanzees did not evolve directly from one another, chimpanzees do not necessarily have human-like language.

This correctly states the conclusion: people assume that species from which humans evolved have human-like language, but this assumption doesn’t apply to chimpanzees since humans didn’t evolve from them. Thus, this assumption doesn’t tell us anything about chimpanzees’ language.

The stimulus does not make this claim. The anthropologist argues that chimpanzees do not necessarily have human-like language but doesn’t describe their language or compare it to human language. Since this claim is not made, it cannot be the main conclusion.

The stimulus doesn’t make this claim. The anthropologist argues that chimpanzees don’t necessarily have human-like language because humans didn’t evolve from chimpanzees, not because chimpanzees lack human intelligence. As this claim isn’t made, it can’t be the main conclusion.

The stimulus does not make this claim. The anthropologist suggests that human language might have developed after the extinction of a common ancestor but does not assert this as a certainty. Additionally, this idea is part of the argument’s premise, not its main conclusion.