Which of the following experimental designs contains several pre-treatment and post-treatment measures, because it is not certain exactly how quickly the effect of the independent variable should be observed or when the most reliable pre-test measurement of the dependent variable should be taken?

What has been the most common method used to ratify amendments the U.S. Constitution?

A) a three-fifths vote in both chambers of Congress B) simple majority of the voters of the United States C) approval from three-fourths of the state legislatures D) Supreme Court approval E) two-thirds vote of special ratifying conventions

According to the UN Charter, states __________.

A. are not inherently equal under international law B. have full sovereignty over their own affairs C. may have full independence and territorial integrity D. should take disputes to the International Court of Justice