While researching a topic, a student has taken the following notes: • Pinnipeds, which include seals, sea lions, and walruses, live in and around water. • Pinnipeds are descended not from sea animals but from four-legged, land-dwelling carnivores. • Canadian paleobiologist Natalia Rybczynski recently found a fossil with four legs, webbed toes, and the skull and teeth of a seal. • Rybczynski refers to her rare find as a “transitional fossil.” • The fossil illustrates an early stage in the evolution of pinnipeds from their land-dwelling ancestors. The student wants to emphasize the fossil’s significance. Which choice most effectively uses relevant information from the notes to accomplish this goal?
","rationale_html":"Choice C is the best answer. The sentence effectively emphasizes the fossil’s significance, explaining that the fossil is rare and illustrates an early stage in the evolution of pinnipeds from their land-dwelling ancestors. Choice A is incorrect. The sentence describes the fossil Rybczynski found; it doesn’t emphasize the fossil’s significance. Choice B is incorrect. The sentence mentions that a fossil resembling both pinnipeds and their ancestors was found; it doesn’t emphasize the fossil’s significance. Choice D is incorrect. The sentence notes a term used to describe the fossil Rybczynski found; it doesn’t emphasize the fossil’s significance.
","correct_answer":["C"],"has_media":false,"has_mathml":false,"has_table":false,"source_created_at":null,"source_updated_at":null,"options":[{"label":"A","content_html":"Canadian paleobiologist Natalia Rybczynski’s fossil has the skull and teeth of a seal, which, like sea lions and walruses, is a pinniped.
","ord":0},{"label":"B","content_html":"Pinnipeds are descended from four-legged, land-dwelling carnivores; a fossil that resembles both was recently found.
","ord":1},{"label":"C","content_html":"Having four legs but the skull and teeth of a seal, the rare fossil illustrates an early stage in the evolution of pinnipeds from their land-dwelling ancestors.
","ord":2},{"label":"D","content_html":"A “transitional fossil” was recently found by paleobiologist Natalia Rybczynski.
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