TOEFL Reading: ETS-TOEFL阅读机经 - BC9UQ7XVYRGRO991L$

Which of the following can be inferred from paragraph 6 about termites? A. They are the only insect species whose members are all social. B. They have smaller communities than hymenopterans. C. They are more independent than hymenopterans. D. They have to live together to pass on digestive bacteria to their young.