The descriptive statistic that involves at least two variables is the

In Schenck v. United States, the Supreme Court ruled that people encouraging men to dodge the draft could be imprisoned because of which of the following?

  a. They were giving aid and comfort to the enemy.  b. They were advocating a Communist revolution.  c. They were inciting violence.  d. ?They were presenting a danger to public order. 

All of the following practices have given opposition parties a significant measure of influence over recruitment EXCEPT for ______.

A. judicial review B. filibuster C. senatorial courtesy D. blue slips