The trash track project select one:

a. measures the volume of various categories of municipal waste in various cities

b. monitors the amount of hazardous items in municipal waste

c. monitors the movement of trash items to improve efficiency of management processes

d. allows cities to charge polluters who dump large volumes of trash

e. tells managers which items should be recycled

The Trash Track project is a MIT (Massachusetts Institute of Technology) project that investigates the understanding of the 'removal-chain' in urban areas and focuses on how pervasive technologies sensors and mobile technologies can expose the challenges of waste management and sustainability.  
The trash track project monitors the movement of trash items to improve efficiency of management processes. Digital tags are added to trash and then followed it as it moved through the city’s sanitation system.