The passage points out which of the following in order to explain the appeal of the notion that some attine ants cultivate and control fungus? A. The ants play the behaviorally active roles in the symbiotic relationship. B. The ants purposefully carry vegetation into their nests for their own consumption. C. Fungus is physiologically a passive substance. D. Other organisms are able to manipulate their symbiotic partners. E. The chemical and physiological properties of the fungus are subject to ant influence.