What function are interest groups serving when they run public relations campaigns on little-known issues?

Causal conclusions

A) Can be drawn from correlational research. B) Cannot be drawn from correlational and differential research. C) Are established by differential research, but not correlational research. D) Are established by correlational research, but not differential research.

Research shows that those who prefer growth controls are

a. lifeboat elitists b. extreme environmentalists. c. big business. d. a mix of communities and income groups.