Ms. Foss makes the point that people do what they have to do in order to survive. They really don't care about the future-- whether that's conserving energy today or preserving the environment-- if they are cold and hungry now. She says that might spell economic and environmental doom in the future. Now, that opinion may or may not be true-- but the principle she uses as the basis of that argument is a well-established economic axiom that is called... A) a penny saved is a penny earned C) Trickle Down Economics B) Supply and Demand D) Discount Rate