Which of the following does NOT affect a worker's marginal productivity?

In the circular-flow diagram, factors of production are the goods and services produced by firms

a. True b. False Indicate whether the statement is true or false

Which of the following statements best describes the invisible hand as described by Adam Smith in The Wealth of Nations?

a. It describes how the world should be. b. Society should focus on other people. c. Self-interested behavior by individuals can lead to positive social outcomes. d. Self-interested behavior by individuals is harmful to society.