Which operative ideal of liberal democracy establishes the rules of what the government can and cannot do?

Contributors to health care costs in the United States are an aging population and __________

a. individual mandates b. employer mandates c. chronic disease d. the number of births

What is the best way to reduce measurement error?

A) Develop and apply a good operational definition. B) Use a ratio scale of measurement. C) Keep the number of participants equal in all groups. D) Conduct research at the experimental level.