Goal: reduce drain on the city's economy caused by traffic clogging.
Plan: introduce congestion pricing, by which drivers would pay to enter the city's most heavily trafficked areas during the busiest times of the day.
Question:
strengthen the idea that plan will achieve it's goal. This is important, we are not looking for answers that indicate potential reasons to implement this plan, we are rather looking for something that supports the idea that this specific plan will be successful in achieving this specific goal.
(A) Approximately one-fifth of the vehicles in the central business district are in transit from one side of the city to the other. This gives a good reason that the plan will achieve it's goal of reducing traffic clogging since if one-fifth of cars are those that enter the business district then the fee may be a deterrent for them and make them avoid the area thereby reducing traffic congestion. There are couple of flaws with this thinking, first assuming that those travelers will not simply pay the fee and still enter the trafficked areas with their vehicles is incorrect to do. Secondly, this option only talks about the central business district area. The question stem states
most heavily trafficked areas and merely used central business district area as an example to put the point across. Our focus is to reduce traffic congestion overall in heavy-clogged areas in general.
(B) Planners expect that, without congestion pricing, traffic in Masana is likely to grow by 6 percent in the next five years.This is merely a good reason to implement congestion pricing, tells us nothing about whether it will lead to successfully achieving the goal of traffic congestion reduction or not.
(C) In other urban areas, congestion pricing has strongly encouraged carpooling (sharing of rides by private commuters). Unlike option A, carpooling does reduce the number of vehicles on the road which leads to lowering the traffic congestion. Also, this mentions carpooling has been led on as a result of congestion pricing which shows clear relationship between the plan and goal that the question stem refers. Moreover, by stating
urban areas we can be confident in drawing parallels with
Masana which is stated to be a city with business district indicating it is a major urban area itself.
(D) Several studies have shown that a reduction in traffic of 15 percent in Masana could result in 5,500 or more new jobs. States a benefit of achieving the goal of traffic congestion reduction. Does not talk about the plan at all. Irrelevant to the matter.
(E) Over 30 percent of the vehicles in the city's center are occupied by more than one person Occupancy of vehicles has nothing to do with traffic congestion which is about the number of vehicles out there at a point in time. Irrelevant to the matter.