How was the city of Curitiba able to reduce the time commuters spent traveling into and out of the city? Question 37Select one: a. The city built an efficient system of elevated highways that avoided congestion associated with intermingling of thru traffic and local traffic. b. The city created a very efficient public transportation system based on subways. c. The city created a very efficient public transportation system based on an elevated monorail railway system. d. The city created a very efficient public transportation system based on buses