Which of the Following Policies Is MOST Likely to Reduce

Multiple Choice

Which of the following policies is MOST likely to reduce traffic congestion in a large metropolitan area because people usually exploit opportunities to make themselves better off?

A) a limited number of free early-bird parking passes given only to those who arrive prior to 6 A.M.
B) a toll road that requires each car to pay a fee to enter the city center
C) an increase in the price of subway and bus fare to and from the city
D) asking citizens to carpool