Which Statement Demonstrates One of the Three Principles of Economy-Wide

Multiple Choice

Which statement demonstrates one of the three principles of economy-wide interactions?

A) A student chooses to rent a movie with friends,rather than study for an economics quiz.
B) Your roommate offers to pay for the movie tickets if you drive to the theater.
C) A city builds a new public park on the grounds of an abandoned warehouse.
D) In 2008,fearing a recession,Congress approved a White House proposal to rebate some taxes for 2007.