Which fact best supports the city planner's opinion? Designated bike lanes have reduced traffic-related accidents by 43 percent in other cities. A nearby city's business district has bike lanes and a much higher population of commuters. The cost of roadwork in the region has reduced the cost of similar projects by more than 12 percent. Research has proven that bike commuters are healthier and happier than car commuters.

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A city planner thinks that reconfiguring the business district’s busy downtown streets to allow for bike lanes is important and is worth the large cost. The lanes will help drivers and cyclists avoid accidents, and they will make the downtown area more attractive to bike commuters.

Which fact best supports the city planner’s opinion?

Designated bike lanes have reduced traffic-related accidents by 43 percent in other cities.  A nearby city’s business district has bike lanes and a much higher population of commuters.  The cost of roadwork in the region has reduced the cost of similar projects by more than 12 percent.  Research has proven that bike commuters are healthier and happier than car commuters.

Designated bike lanes have reduced traffic-related accidents by 43 percent in other cities.

Explanation:

The text shown above reveals that a planner wants to make city traffic safer and more comfortable for both drivers and cyclists who are in great danger when driving in the middle of cars. For that he wants to build a bike path, which will be very beneficial for the city.

To convince people that this idea is excellent, he can use the argument that "designated bicycle lanes have reduced traffic-related accidents by 43% in other cities."

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the answer is industry