We think of termites as insects that "eat" wood. In fact, however, termites rely on a variety of eukaryotic and prokaryotic gut microbes to digest cellulose—without the microbes, the termites will ingest wood, but will starve. This, then, is an example of a(n):a. obligate mutualism. b. obligate antagonism. c. facultative mutualism. d. facultative antagonism. e. None of the answer options is correct.