The author mentions "Darwin, Huxley, and other evolutionary biologists" in order to A. Provide evidence that Joly's calculations inspired scientists working on other lines of scientific inquiry B. Support the claim that all of the leading scientists of the time believed that Earth was just over 90 million years old C. Argue that Joly's calculations would have been more exact if he had collaborated with experts in other fields D. Provide examples of scientists who believed the age of Earth to be greater than just a few million on year, like Joly, in order to account for their findings