Like the grassy fields and old pastures that the upland sandpiper needs for feeding and nesting when it returns in May after wintering in the Argentine Pampas, the sandpipers vanishing in the northeastern United States is a result of residential and industrial development and of changes in farming practices.
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Athe sandpipers vanishing in the northeastern United States is a result of residential and industrial development and of changes in
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Bthe bird itself is vanishing in the northeastern United States as a result of residential and industrial development and of changes in
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Cthat the birds themselves are vanishing in the northeastern United States is due to residential and industrial development and changes to
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Din the northeastern United States, sandpipers' vanishing is due to residential and industrial development and to changes in
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Ein the northeastern United States, the sandpipers' vanishing, a result of residential and industrial development and changing
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正确答案: B