What type of substances are subterranean termites particularly reliant upon for their social structure?

Subterranean termites are highly social insects that rely on a complex social structure to thrive in their environment. The correct choice emphasizes the importance of division of labor and interdependence among the colony members. In these colonies, different castes, including workers, soldiers, and reproductive individuals, perform specialized roles that are essential for the survival and efficiency of the colony. Workers are responsible for foraging, feeding the queen, and maintaining the nest, while soldiers protect the colony from predators. This division of labor allows termites to effectively gather resources, care for their young, and defend themselves, showing a high level of interdependence among the colony members.

In contrast, predatory instincts and solitary behaviors do not apply to subterranean termites, as their survival hinges on cooperation and collaboration. Random mating does occur within the population, but it does not define the social structure as clearly as division of labor does. The interdependent roles within a termite colony underscore the significance of social organization in their success as a species.