Passage Summary: Some people claim apes can speak but just don't. The author thinks this is ridiculous because evolution wouldn't give an animal a superpower like language and then have the animal ignore it, much like a bird with wings that never flies.

Conclusion: The claim that higher apes possess language capacity but never use it is highly implausible.

Reasoning: Having a biological trait with a massive evolutionary advantage without ever utilizing it is as absurd as an animal having wings but never flying.

Analysis: The argument relies on an analogy to demonstrate the absurdity of a specific claim. It establishes a principle that biological capabilities with high survival value are generally put to use by the organisms that possess them. To find a parallel, look for an answer choice that uses a comparison to show why a certain situation or claim is unlikely or illogical based on the nature of the traits involved. The structure is essentially: 'Claiming X is like claiming Y, and Y is clearly ridiculous, so X must be too.'