Why do public schools typically require proof that children have been immunized before enrolling?
A. It is an efficient way to publicize the need for immunizations.
B. People don't realize that becoming vaccinated entails no risk.
C. It is a costly to fake signal that a child is healthy.
D. People do not adequately account for the external cost of not vaccinating their children.
Answer: D
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In early 1996, Congress passed the "Freedom to Farm Bill.". Following the bill's enactment,
a. farmers found that competition from international agriculture declined. b. farm prices rose steadily for the next 4 years. c. agriculture was completely deregulated, and farmers began to operate without any government subsidies or assistance. d. farm prices fell, leading Congress to authorize emergency payments to farmers in 1998 and 1999.
Suppose that, given the same number of workers, the United States can produce five times as many computers or 10 times as many airplanes as Mexico. Which of the following statements is true?
A. The United States has an absolute advantage in the production of computers, and Mexico has an absolute advantage in the production of airplanes. B. The United States has an absolute advantage in the production of both airplanes and computers. C. Mexico has an absolute advantage in the production of both airplanes and computers. D. The United States has an absolute advantage in the production of airplanes, and Mexico has an absolute advantage in the production of computers.
A firm uses labor and capital in its production process, and it faces competitive markets for its inputs and output. The firm's long-run labor demand curve
A) intersects with the short-run labor demand curve in several points. B) is exactly identical to its short-run labor demand curve. C) is steeper than its short-run labor demand curve. D) is flatter than its short-run labor demand curve.
All of the following statements about asymmetric information are true except
A. asymmetric information can only be solved through government intervention. B. asymmetric information creates market failures because it makes it harder for individuals to engage in transactions that would take place in the presence of perfect information. C. asymmetric information occurs when one party to a transaction has relevant information to the transaction that the other party does not have. D. asymmetric information occurs in the market for used cars and in the insurance market.