Because a pure public good is: Select an answer and submit. For keyboard navigation, use the up/down arrow keys to select an answer. a excludable, it is not possible for any consumer to be a free rider. b C excludable, it is possible for some consumers to be free riders. nonexcludable, it is not possible for any consumer to be a free rider. d nonexcludable, it is possible for some consumers to be free riders.