Why did the chick cross the road

Is there such a thing as a social structure that constrains individual action, or is society nothing more than a figment of our imaginations?

The principal effector function of igm is

The controlled use of fire by hominids: (a) limited the expansion of hominids into certain environments, such as dry grasslands. (b) decreased the amount of food energy available in the hominid diet. (c) contributed to geographical expansion and food production techniques in positive ways. (d) has been shown to contribute little to the digestive process of hominids.