In the context of the city planner's report focused on changes in transportation preferences, particularly regarding interest in bicycling, the best graphic to support the text would be:
A. A map of Omaha showing roadways where bicycle lanes could be added.
This graphic would directly relate to the city's efforts to enhance bicycling infrastructure and would provide a visual representation of potential improvements that can support the increasing interest in bicycling among Omaha residents. While other options may provide relevant information, they do not specifically address how the city can better support the transportation preference of bicycling.