What prediction would you make about the topic based on this text? The PRT is a system that allows on-demand, non-stop public transportation in small individual vehicles built on tracks specifically for them. Unlike most public transit systems that transport large groups of people on scheduled routes, wasting time and energy, the PRT transports use lighter, smaller vehicles and smaller groups of people. Supporters boast that the PRT costs less to build, uses less energy, and eliminates the dreaded wait time involved with most public transportation. a. the future of public transportation and the environment c. both of these b. why the PRT is not being used yet d. nether of these