Answer:
D is the correct answer because it is
Answer: Multilateral or international agreement.
Explanation:
This agreement is an agreement between two, three, or more entities supported by international legal norms. This type of contract is most often concluded between states and is a legal act that must be respected. This contract originated in Vienna in 1969, and the contract came into practice 11 years later. The convention is currently accepted and signed by about 116 countries around the world.
When people talk about resources they mean all of the above
