Which of the following figures represents the cost of outdoor lighting in the US?

The figure representing the cost of outdoor lighting in the US is $3.3 billion. This amount reflects the cumulative expenses associated with various aspects of outdoor lighting, including installation, maintenance, energy consumption, and the adoption of newer technologies for enhanced efficiency. This specific value is significant as it indicates the investment made towards outdoor lighting, which includes street lights, park lighting, and other public lighting infrastructures that contribute to urban safety and aesthetic needs. The selection of this number rather than others shows that it closely aligns with reported industry statistics or government analyses that focus on outdoor lighting expenditure trends in recent years, establishing it as the best estimate among the provided choices.