Grocery stores first started using plastic bags to bag shopper's groceries over twenty years ago. When a shopper checked out, the cashier offered a choice of paper or plastic bag. Environmentally conscious shoppers almost always chose the paper bag (or brought their own) because of the increased environmental impact of the plastic bag. Manufacturers started making bags from recycled plastic, but the bags still pose an unresolved disposal problem because they take a thousand years to decompose. Recycling of the bags themselves is rare and unavailable in most places. Environmentally conscious consumers, however, now rarely request paper bags, although the environmental costs of plastic bags have not been resolved.
Which of the following, if true, would best explain the behavior of environmentally conscious consumers as described above?
A. Consumers are reusing the bags many times themselves, thereby recycling them within the household before final disposal.
B. When taxed for the use of plastic bags, consumers in Cork County, Ireland, reduced their use of plastic bags by ninety per cent.
C. Sea turtles mistake plastic bags floating on the sea for jellyfish and eat the bags, which often kills the turtles.
D. A survey of the members of the nation's largest environmental organization showed that most of the members think that using paper bags has less environmental impact than using plastic bags.
E. The cost of plastic bags is one-fourth the cost of paper bags.