If the main city thoroughfare is restricted to commercial vehicles weighing less than 2 tons, most of the commercial traffic would be forced to bypass the city using the city highway. Such a reduction in traffic will significantly reduce accident rates in the city.

The conclusion drawn above depends on which of the following assumptions?

Correct answer marked below

City highway would be as convenient as the main city thoroughfare for the vehicles that are forced to use the highway.

Private vehicle drivers are more careful than commercial vehicle drivers and hence can be allowed to drive on the main city thoroughfare.\n

Most traffic today consists of commercial vehicles weighing more than 2 tons.

Commercial vehicles have a greater risk of becoming involved in accidents.

Higher traffic congestion leads to higher risk of accidents.

Correct

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What this question tests

Whether you can identify the unstated assumption a critical-reasoning argument depends on.

Picking an option that strengthens the argument or is merely relevant instead of one that is required.