Australian embryologists have found evidence that suggests that the elephant is descended from an aquatic animal, and its trunk originally evolving as a kind of snorkel.
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Athat suggests that the elephant is descended from an aquatic animal, and its trunk originally evolving
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Bthat has suggested the elephant descended from an aquatic animal, its trunk originally evolving
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Csuggesting that the elephant had descended from an aquatic animal with its trunk originally evolved
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Dto suggest that the elephant had descended from an aquatic animal and its trunk originally evolved
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Eto suggest that the elephant is descended from an aquatic animal and that its trunk originally evolved
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正确答案: E