When making contributions to candidates for Congress, PACs tend to show a preference for

When researchers conduct survey studies via the internet,

a. they have to worry that respondents do not represent the population in general. b. there are newly established methods to guarantee the validity of the data. c. they can expect approximately equal participation by people at all socioeconomic levels. d. they have to question the validity of the data because teenagers access the internet more than adults do.

Which of the following is most likely to occur in a political system that does not have institutionalized procedures for leadership succession?

A. revolution B. rebellion C. coup D. democratic revolution