The Keystone XL pipeline between Canada and Texas will be a source of oil for America independent of Alaskan and Venezuela oil

The interstate commerce clause

a. allows the states to regulate the transportation of goods within their borders. b. allows states to regulate the sale and manufacture of goods within their borders. c. allows states to regulate the movement of goods across state borders. d. allows states with poor economies to impose tariffs on goods imported from other states. e. allows Congress to regulate the movement of goods across state borders.

Which theory explains that a well-designed survey effort will maximize the social rewards for survey participation and minimize its costs as well as establish trust that the rewards will outweigh the costs?

A. social desirability B. social exchange C. cost–benefit analysis D. rational choice