The ideas attributed to T. H. Huxley in the passage suggest that he would most likely agree with which of the following statements?

An animal's brain size has little bearing on its ability to master complex behaviors.

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An animal's appearance is often influenced by environmental requirements and physical capabilities.

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Animals within a given family group are unlikely to change their appearance dramatically over a period of time.

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The origin of flight in vertebrates was an accidental development rather than the outcome of specialization or adaptation.

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Solution

The correct option is B
An animal's appearance is often influenced by environmental requirements and physical capabilities.

The author has mentioned in the fourth paragraph that although scales typically cover reptiles, the pterosaurs probably had hairy coats. Huxley speculated that a coat of hair would insulate against loss of body heat and might streamline the body to reduce drag in flight. Thus, we can logically conclude that an animal’s appearance is often influenced by environmental requirements and physical capabilities. Hence, it is evident that answer option (b) is the correct answer choice.

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