Tomas, a bank employee, doesn't feel that his coworkers accept him. He decides to dress more casually, as they do, hoping to be accepted. Which level of Maslow's hierarchy of needs is Tomas trying to work on?

Suppose that, on the basis of a nation’s production possibilities curve, an economy must sacrifice 10,000 pizzas domestically to get the 1 additional industrial robot it desires but that it can get the robot from another country in exchange for 9,000 pizzas. now consider the following statement: “through international specialization and trade, a nation can reduce its opportunity cost of obtaining goods and thus ‘move outside its production possibilities curve.’”