The __________ was enacted to address the potential succession controversy if the office of the vice president is vacant at the moment when a president is unable to perform the duties of the presidency

Two variables that are related in such a way that change in one variable is directly responsible for change in the other variable is called __________

a. a coincidence b. a correlation c. a spurious relationship d. causation e. proof

Which of the following is an advantage that congressional incumbents enjoy when running for reelection?

a. Incumbents do not have to disclose the sources of their funding. b. Incumbents generally receive more campaign contributions. c. Incumbents can receive anonymous donations up to $10,000. d. Incumbents enjoy public financing of their campaigns. e. Incumbents are exempt from franking privileges.