Argument: To reduce traffic congestion, city officials propose increasing the tolls on bridges and tunnels during peak hours. They argue this will encourage commuters to use public transportation instead, thereby easing traffic flow. The city officials' argument relies on which of the following assumptions?

The correct answer to the question "Argument: To reduce traffic congestion, city officials propose increasing the tolls on bridges and tunnels during peak hours. They argue this will encourage commuters to use public transportation instead, thereby easing traffic flow. The city officials' argument relies on which of the following assumptions?" is Option B: Public transportation is a viable alternative for most commuters currently using bridges and tunnels..

The other options — A) The increased tolls will generate significant revenue for public transportation improvements., C) Traffic congestion is primarily caused by individual commuters rather than commercial vehicles., D) Commuters are largely unaware of the environmental impact of driving during peak hours. — are incorrect for this GRE Exam Prep question. As explained above: For commuters to shift to public transportation, it must be a practical option. If public transport isn't available or convenient, raising tolls won't reduce congestion as commuters will simply pay m…