A group of environmentalists are planning a presentation. They hope to convince their audience to start recycling and to use public transportation more often. Which type of presentation should they use?

Probably a video showing the general categories of what to recycle including cardboard, paper, newspaper, glass, different tye pes of plastic and the recycle codes on the bottom of plastic containers which if they have a number inside a recycle triangle can be recycled and then also discussing air pollution from car exhausts and the way to reduce this is by many people using one hydrocarbon burning bus or else using electric trolleys or subways or skytrains which eliminate the production of CO2.