Which of the following is not one of the four broad categories of resources?

Which of the following illustrates government acting as a referee?

a. taxing high income persons b. enforcing contract provisions between buyer and seller c. buying new weapons for defense d. mailing checks to social security recipients e. collecting data on imports and exports

Which of the following is an effect of a subsidy that encourages exports?

a. The amount of labor used in production is lower. b. The raw materials needed for production are reduced. c. The costs of production have been reduced. d. The opportunity costs of production are lower.