GWD6-Q15:——这题答案确定了么

Capuchin monkeys often rub their bodies with acertain type of millipede.  Laboratorytests show that secretions from the bodies of these millipedes are rich in twochemicals that are potent mosquito repellents, and mosquitoes carry parasitesthat debilitate capuchins.  Somescientists hypothesize that the monkeys rub their bodies with the millipedesbecause doing so helps protect them from mosquitoes.

Which of the following, if true, provides the mostsupport for the scientists’ hypothesis?

A.     A single millipede often gets passed around among severalcapuchins, all of whom rub their bodies with it.

B.     The two chemicals that repel mosquitoes also repel severalother varieties of insects.

C.     The capuchins rarely rub theirbodies with the millipedes except during the rainy season, when mosquitopopulations are at their peak.

D.     Although the capuchins eat several species of insects, theydo not eat the type of millipede they use to rub their bodies.

E.      The two insect-repelling chemicals in the secretions of themillipedes are carcinogenic for humans but do not appear to be carcinogenic forcapuchins.