Comparative advantage is the lowest opportunity cost, absolute advantage is the best producer.
The answer is: c. his mother gave him his allowance for doing his chores
Secondary reinforcement refers to something that could influence other people to do a certain behavior that come from other thing beside their own will.
When a mother gives allowance for his chores, it could make the children much more likely to do the chores. But the increase in likelihood does not come from the children's will, but from the children's intent to get the money,.
The Progressive Era (1890 - 1920) Progressivism is the term applied to a variety of responses to the economic and social problems rapid industrialization introduced to America. Progressivism began as a social movement and grew into a political movement. The early progressives rejected Social Darwinism.
