Which of the following helps in reducing the problem of adverse selection in health insurance markets?

At the market output and price for a good whose production causes pollution:

a. pollution is eliminated. b. the marginal social cost of production exceeds the marginal social benefit of production c. the private cost of production equals the private benefit of production. d. the marginal social benefit of production equals the marginal social cost of production.

When a U.S. Senator tells a campaign crowd that "High inflation rates are a much more serious economic problem than high unemployment rates," it is an example of

A. an empirically proven fact. B. a normative statement. C. a microeconomic argument. D. a positive statement.