Answer:
The answer is option
D) unlike public goods, common resources are rival in consumption.
Explanation:
Common Pool Resources are by definition non excludable and rival. Thus, if a good is both non excludable and rival it is a Common Pool Resource or a Common Good, but not a Public Good Common resources are rival in consumption but not excludable.
However, Public Goods can be excludable or rival to varying degrees. Some goods that cause positive or negative externalities are public goods
Public Good and Common Resource are both non-excludable. The main difference is their rivalry property.
Public Goods can be consumed without reducing availability for others, while consuming Common Resources will decrease the available resources for others.
Public Good has free-riders problem (lack of contributions) while Common Goods has "tragedy of the commons problem" (overuse).