__________: That which is manipulated or changed to examine its effect upon the dependent variable

Which of the following questions has an objective answer?

a) Is Mexico a member of NATO? b) Should Canada and the United States have a common currency? c) Which political party does a better job managing the economy? d) Are cigarette companies responsible for tobacco-related illnesses?

President's Rule

a. refers to the constitutional provision by which the national government can suspend state government. b. refers to the constitutional provision by which the president can remove the prime minister for acting in a manner dangerous to the state. c. has been invoked only a few times in India's history. d. refers to the idea that the president, rather than the prime minister, is the major political force in India. e. was removed from the constitution by a landmark Supreme Court decision.