I would go with D too.
The passage says that certain animals are ON THE VERGE OF EXTINCTION. It does not say that they are extinct. The answer choice indicates that animals have already become extinct; this is something that is not mentioned in the passage.
The passage says that certain animals are ON THE VERGE OF EXTINCTION. It does not say that they are extinct. The answer choice indicates that animals have already become extinct; this is something that is not mentioned in the passage.



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