Which material would most reduce landfill volume if its recycling rate increased, and why?
A
aluminum, because it is used for beverages and already has a moderate recycling rateB
glass, because it is heavier than other materials and is used for food jars and beveragesC
cardboard, because it has the highest recycling rate and would be easy to improve furtherD
plastic, because it has a low recycling rate and is widely used for disposable items