Because it is efficient, economical, and reliable, public transportation is the best way to reduce the number of traffic jams. There are other possible ways to address this problem, but using public transportation is clearly the best. Traffic jams during very busy hours on the road can be reduced and more people can get to work on time and avoid the frustration caused by sitting in the middle of a long line of cars. Cities and governments should consider ways to improve their public transportation system and encourage more people to use it. If they do, they will surely see fewer traffic jams on their roads and much happier drivers. What component of problem- and-  solution structure is this?