TOEFL Reading: ETS-TOEFL阅读机经 - 9OF8GZZB2163JCASL$

Which of the sentences below best expresses the essential information in the highlighted sentence in the passage? Incorrect choices change the meaning in important ways or leave out essential information. A. In winter, when fresh grass is not available, termites must rely on nonperishable food sources such as hay and straw. B. Advanced termites store different foods in different chambers, reserving the least perishable material for winter. C. Advanced termites have special chambers where they store nonperishable food supplies. D. Advanced termites' supplies of grass clippings are like hay and straw fed to cattle in winter.