For some reason, you hate psychology class. You have learned that if you hit the person next to you about five minutes into class, then you are sent to the Dean's office and don't have to listen to that boring Mr. Agelson. So, every class you hit someone to get out of the lecture. This is BEST explained by

The united states constitution gives the the power to regulate interstate commerce.

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.

Mike and his wife, amanda, are arguing about his in-laws. mike doesn’t want them to visit because they fight all the time when they come to the house and he is worried about the effect that their fighting is having on mike and amanda’s children. amanda finally yells out: “what about our fighting? ” mike replies, “well, that’s different. we fight because we’re having a disagreement, they fight because they hate each other! ” this is an example of