Strengthen an Argument Practice Test

A university dining service replaced disposable plastic cutlery with compostable cutlery in all campus cafeterias. In the semester after the change, the dining service reports a 25% reduction in the weight of cafeteria waste sent to the landfill. The director concludes that switching to compostable cutlery was the cause of the reduction and recommends expanding the program to all university-operated catering events to further reduce landfill waste. Which statement provides the strongest support for the conclusion?

A city transportation office notes that after installing protected bike lanes on three major corridors last year, the number of reported bicycle–car collisions on those corridors fell by 18% compared with the prior year. The office concludes that installing protected bike lanes on the city’s remaining major corridors will reduce bicycle–car collisions citywide. Which of the following, if true, most strengthens the argument?